Som professor vid institutionen för byggteknik vid Linnéuniversitetet delar jag min tid mellan undervisning, forskning och administrativa uppgifter.
Huvudområden i mitt undervisnings- och forskningsarbete är bärande träkonstruktioner och trämekanik. Min kärnkompetens omfattar experimentella och numeriska metoder inom mekanik, vilka jag tillämpar i undervisning och i forskning. Sedan juli 2019 är jag professor i byggteknik. September 2016 hade jag blivit utnämnt docent med inriktning mot konstruktionsteknik vid Linnéuniversitetet och jag har en docentur i material- och strukturmekanik från TU Wien. Innan dess har jag arbetat som post-dok forskare vid Institutionen för Mekanik hos Material och Strukturer vid Tekniska Universitetet i Wien. Jag har skrivit min doktorandsavhandling inom området trämekanik och min masterutbildning i byggteknik gjordes vid samma institution som där jag skrev min avhandling.
Undervisning
Vid institutionen för Byggteknik är jag lärare inom konstruktionsteknik, där jag ger en kurs i konceptuell konstruktionteknik på avancerade nivå inom masterutbildningen i hållbar konstruktionsteknik. Jag har undervisat i projekt Expertkompetens för hållbart träbyggande. Kurserna i det senare projektet är utvecklade i samverkan med näringslivet med syfte att stärka kompetensen hos praktiserande ingenjörer. Jag handleder exjobb på så väl högskoleingenjörs- och magisternivå och jag handleder doktorander i byggteknik. Syftet med mitt undervisningsarbete är att öka kunskapen kring trä som bärande konstruktionsmaterial hos framtidens ingenjörer. En djupgående kompetens i träprodukters egenskaper kan bidra till att olika intressenter ser potentialen som finns i byggkonstruktioner uppförda med trä.
Forskning
Mina huvudområden i forskning omfattar trämekanik i olika längdskalor, experimentell karakterisering av trä och träprodukter, numerisk simulering av trä vid olika längdskalor, förband i träkonstruktioner, numerisk modellering av träkonstruktioner och beräkning av hållfastheten i träkonstruktioner. Min forskning syftar till att utveckla beräknings- och analysmetoder med syfte att få en förbättrad förståelse av materialet eller komponenten av trä i en bärande konstruktion. I min forskning tillämpas avancerade experimentella metoder för att fastställa lämplig data som underlag för beräkningsmodeller. Avancerad numerisk modelleringsteknik kan bidra till att utveckla mer sofistikerade konstruktionsmetoder för bärande träkonstruktioner i framtiden.
Research profiles
Mina forskargrupper
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Cross-Laminated Timber (CLT) Cross-Laminated Timber (CLT) är ett av de nyaste forskningsområdena vid institutionen för byggteknik. Det kombinerar den breda, vetenskapliga kunskapen från flera olika…
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Förband i träkonstruktioner Förband i träkonstruktioner är ett av forskningsområdena vid institutionen för byggteknik. Vi undersöker de mekaniska egenskaperna hos förband av olika omfattning, från…
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Samverkanskonstruktioner Samverkanskonstruktioner, som inkluderar kompositelement eller hybridstrukturer, är det senaste forskningsområdet på Institutionen för byggteknik. Forskningens fokus ligger på…
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Träbyggnadsteknik Den huvudsakliga inriktningen för forskningsmiljön Träbyggnadsteknik inom ämnet byggteknik är träbyggnadsteknik och tillämpad mekanik. Forskningen är i stor utsträckning tillämpad…
Mina pågående forskningsprojekt
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Projekt: Fukt- och tidsberoende egenskaper hos sydsvenskt lövträ för lastbärande konstruktioner Målsättningen med detta projekt är att undersöka långtidsegenskaperna, motsvarande en byggnads…
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Projekt: Hållbart byggande med trä – materialeffektivt värdeskapande från trämaterial till byggnader Genom forskning och utveckling av ny kunskap kommer projektet att bidra till ökad konkurrenskraft…
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Projekt: Större konkurrenskraft för KL-träbaserade byggsystem genom effektiv konstruktion och reducerat kolavtryck Målet med detta projekt är att öka konkurrenskraften för korslimmat trä som…
Mina avslutade forskningsprojekt
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Projekt: Boendeattraktivitet i flerbostadshus i trä Detta projekt ska skapa förståelse för träets positiva effekter på välbefinnande och attraktivitet i flerbostadshus. Projektet syftar till att öka…
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Projekt: CT-skanning och betydelsen av kvistar i konstruktionsvirke Detta projekt syftade till att genomföra en ingående analys av trämaterial på mikrometernivå med hjälp av datortomografi. Specifikt…
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Projekt: ForestValue Hardwood joint - Innovative joints in hardwoods Målsättningen med detta projekt är att främja högpresterande lövträkonstruktioner inom den europeiska byggsektorn genom att…
Publikationer
Artikel i tidskrift (Refereegranskat)
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Gikonyo, J., Schweigler, M., Bader, T.K. (2024). Exploring the relationship between embedment behaviour in cross-laminated timber and its layers : An experimental study. Engineering Structures. 318.
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Gikonyo, J., Schweigler, M., Bader, T.K. (2024). Beam-on-Foundation modelling of dowel-type single fastener connections in cross laminated timber. Engineering structures. 303.
Status: Publicerad -
Olsson, A., Schirén, W., Segerholm, K., Bader, T.K. (2023). Relationships between stiffness of material, lamellas and CLT elements with respect to out of plane bending and rolling shear. European Journal of Wood and Wood Products. 81. 871-886.
Status: Publicerad -
Basterrechea-Arevalo, M., Schweigler, M., Lemaitre, R., Bader, T.K. (2023). Numerical modelling of moment-transmitting timber connections. Engineering structures. 297.
Status: Publicerad -
Akter, S.T., Binder, E., Bader, T.K. (2023). Moisture and short-term time-dependent behavior of Norway spruce clear wood under compression perpendicular to the grain and rolling shear. Wood Material Science & Engineering. 18 (2). 580-593.
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Schweigler, M., Akter, S.T., Sabaa, S., Bader, T.K. (2022). An experimental study of the stiffness and strength of cross-laminated timber wall-to-floor connections under compression perpendicular to the grain. Engineering structures. 271.
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Binder, E., Derkowski, W., Bader, T.K. (2022). Development of Creep Deformations during Service Life : A Comparison of CLT and TCC Floor Constructions. Buildings. 12 (2).
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Dodoo, A., Truong, N.L., Dorn, M., Olsson, A., Bader, T.K. (2022). Exploring the synergy between structural engineering design solutions and life cycle carbon footprint of cross-laminated timber in multi-storey buildings. Wood Material Science & Engineering. 17 (1). 30-42.
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Akter, S.T., Schweigler, M., Serrano, E., Bader, T.K. (2021). A Numerical Study of the Stiffness and Strength of Cross-Laminated Timber Wall-to-Floor Connections under Compression Perpendicular to the Grain. Buildings. 11 (10).
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Van Blokland, J., Florisson, S., Schweigler, M., Ekevid, T., Bader, T.K., et al. (2021). Embedment properties of thermally modified spruce timber with dowel-type fasteners. Construction and Building Materials. 313.
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Akter, S.T., Serrano, E., Bader, T.K. (2021). Numerical modelling of wood under combined loading of compressionperpendicular to the grain and rolling shear. Engineering structures. 244.
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Akter, S.T., Bader, T.K. (2020). Experimental assessment of failure criteria for the interaction of normal stress perpendicular to the grain with rolling shear stress in Norway spruce clear wood. European Journal of Wood and Wood Products. 78. 1105-1123.
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Godinho, P.M.J., Jajcinovic, M., Wagner, L., Vass, V., Fischer, W., et al. (2019). A continuum micromechanics approach to the elasticity and strength of planar fiber networks : Theory and application to paper sheets. European journal of mechanics. A, Solids. 75. 516-531.
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Gečys, T., Bader, T.K., Olsson, A., Kajėnasa, S. (2019). Influence of the rope effect on the slip curve of laterally loaded, nailed and screwed timber-to-timber connections. Construction and Building Materials. 228. 1-13.
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Schweigler, M., Bader, T.K., Hochreiner, G., Lemaître, R. (2018). Parameterization equations for the nonlinear connection slip applied to the anisotropic embedment behavior of wood. Composites Part B : Engineering. 142. 142-158.
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Bader, T.K., Vessby, J., Enquist, B. (2018). Path dependence in OSB sheathing-to-framing nailed connection revealed by biaxial testing. Journal of Structural Engineering. 144 (10).
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Schweigler, M., Bader, T.K., Hochreiner, G. (2018). Engineering modeling of semi-rigid joints with dowel-type fasteners for nonlinear analysis of timber structures. Engineering structures. 171. 123-139.
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Schweigler, M., Bader, T.K., Vessby, J., Eberhardsteiner, J. (2017). Constrained displacement boundary condition in embedment testing of dowel-type fasteners in LVL. Strain. 53 (6).
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Bader, T.K., Eberhardsteiner, J., De Borst, K. (2017). Shear stiffness and its relation to the microstructure of 10 European and tropical hardwood species. Wood Material Science & Engineering. 12 (2). 82-91.
Status: Publicerad -
Hochreiner, G., Bader, T.K., Schweigler, M., Eberhardsteiner, J. (2017). Structural behaviour and design of dowel groups : experimental and numerical identification of stress states and failure mechanisms of the surrounding timber matrix. Engineering structures. 131. 421-437.
Status: Publicerad -
Bader, T.K., Schweigler, M., Hochreiner, G., Eberhardsteiner, J. (2017). Ingenieurmodelle für die Strukturmodellierung und Nachweisführung von stiftförmigen Verbindungen im Holzbau : (Engineering models for the structural design and verification of dowel-type connections in timber structures). Österreichische Ingenieur- und Architekten-Zeitschrift. 162 (1-12). 1-9.
Status: Publicerad -
Wagner, L., Almkvist, G., Bader, T.K., Bjurhager, I., Rautkari, L., et al. (2016). The influence of chemical degradation and polyethylene glycol on moisture-dependent cell wall properties of archeological wooden objects : a case study of the Vasa shipwreck. Wood Science and Technology. 50 (6). 1103-1123.
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Schweigler, M., Bader, T.K., Hochreiner, G., Unger, G., Eberhardsteiner, J. (2016). Load-to-grain angle dependence of the embedment behavior of dowel-type fasteners in laminated veneer lumber. Construction and Building Materials. 126. 1020-1033.
Status: Publicerad -
Bader, T.K., Dastoorian, F., Ebrahimi, G., Unger, G., Lahayne, O., et al. (2016). Combined ultrasonic-mechanical characterization of orthotropic elastic properties of an unrefined bagasse fiber-polypropylene composite. Composites Part B : Engineering. 95. 96-104.
Status: Publicerad -
Lederer, W., Bader, T.K., Muszyński, L., Eberhardsteiner, J. (2016). Exploring a Multi-modal Experimental Approach to Investigation of Local Embedment Behaviour of Wood under Steel Dowels. Strain. 52 (6). 531-547.
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Lederer, W., Bader, T.K., Unger, G., Eberhardsteiner, J. (2016). Influence of different types of reinforcements on the embedment behavior of steel dowels in wood. European Journal of Wood and Wood Products. 74 (6). 793-807.
Status: Publicerad -
Bader, T.K., Schweigler, M., Hochreiner, G., Enquist, B., Dorn, M., et al. (2016). Experimental characterization of the global and local behavior of multi-dowel LVL-connections under complex loading. Materials and Structures. 49 (6). 2407-2424.
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Bader, T.K., Schweigler, M., Serrano, E., Dorn, M., Enquist, B., et al. (2016). Integrative experimental characterization and engineering modeling of single-dowel connections in LVL. Construction and Building Materials. 107. 235-246.
Status: Publicerad -
Wagner, L., Bader, T.K., Ters, T., Fackler, K., De Borst, K. (2015). A combined view on composition, molecular structure, and micromechanics of fungal degraded softwood. Holzforschung. 69 (4). 471-482.
Status: Publicerad -
Bader, T.K., Schweigler, M., Hochreiner, G., Serrano, E., Enquist, B., et al. (2015). Dowel deformations in multi-dowel LVL-connections under moment loading. Wood Material Science & Engineering. 10 (3). 216-231.
Status: Publicerad -
Gečys, T., Daniunas, A., Bader, T.K., Wagner, L., Eberhardsteiner, J. (2015). 3D finite element analysis and experimental investigations of a new type of timber beam-to-beam connection. Engineering structures. 86. 134-145.
Status: Publicerad -
Wagner, L., Bos, C., Bader, T.K., De Borst, K. (2015). Effect of Water on the Mechanical Properties of Wood Cell Walls : Results of a Nanoindentation Study. BioResources. 10 (3).
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Wagner, L., Bader, T.K., De Borst, K. (2014). Nanoindentation of wood cell walls : effects of sample preparation and indentation protocol. Journal of Materials Science. 49 (1). 94-102.
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Wagner, L., Bader, T.K., Eberhardsteiner, J., De Borst, K. (2014). Fungal degradation of softwood cell walls : Enhanced insight through micromechanical modeling. International Biodeterioration & Biodegradation. 93. 223-234.
Status: Publicerad -
De Borst, K., Bader, T.K. (2014). Structure-function relationships in hardwood : Insight from micromechanical modelling. Journal of Theoretical Biology. 345. 78-91.
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Bader, T.K., De Borst, K., Fackler, K., Ters, T., Braovac, S. (2013). A nano to macroscale study on structure-mechanics relationships of archaeological oak. Journal of Cultural Heritage. 14 (5). 377-388.
Status: Publicerad -
Bader, T.K., De Borst, K., Eberhardsteiner, J. (2013). Micromechanical modeling of Common yew and Norway spruce. Proceedings in Applied Mathematics and Mechanics : PAMM. 13 (1). 185-186.
Status: Publicerad -
Hochreiner, G., Bader, T.K., De Borst, K., Eberhardsteiner, J. (2013). Stiftförmige Verbindungsmittel im EC5 und baustatische Modellbildung mittels kommerzieller Statiksoftware. Bauingenieur : Zeitschrift für das gesamte Bauwesen. 88. 275-289.
Status: Publicerad -
Gloimüller, S., De Borst, K., Bader, T.K., Eberhardsteiner, J. (2012). Determination of the linear elastic stiffness and hygroexpansion of softwood by a multilayered unit cell using poromechanics. Interaction and Multiscale Mechanics, An International Journal. 5 (3). 229-265.
Status: Publicerad -
Bader, T.K., Hofstetter, K., Alfredsen, G., Bollmus, S. (2012). Changes in microstructure and stiffness of Scots pine (Pinus sylvestris L) sapwood degraded by Gloeophyllum trabeum and Trametes versicolor Part II : Anisotropic stiffness properties. Holzforschung. 66 (2). 199-206.
Status: Publicerad -
Bader, T.K., Hofstetter, K., Alfredsen, G., Bollmus, S. (2012). Microstructure and stiffness of Scots pine (Pinus sylvestris L) sapwood degraded by Gloeophyllum trabeum and Trametes versicolor Part I : Changes in chemical composition, density and equilibrium moisture content. Holzforschung. 66 (2). 191-198.
Status: Publicerad -
Gamstedt, E.K., Bader, T.K., De Borst, K. (2012). Mixed numerical–experimental methods in wood micromechanics. Wood Science and Technology. 47 (1). 183-202.
Status: Publicerad -
Mang, H.A., Pichler, B., Bader, T.K., Füssl, J., Jia, X., et al. (2012). Quantification of structural and material failure mechanisms across different length scales : from instability to brittle-ductile transitions. Acta Mechanica. 223 (9). 1937-1957.
Status: Publicerad -
Wagner, L., Bader, T.K., Auty, D., De Borst, K. (2012). Key parameters controlling stiffness variability within trees : a multiscale experimental–numerical approach. Trees. 27 (1). 321-336.
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Bader, T.K., Hofstetter, K., Eberhardsteiner, J., Keunecke, D. (2012). Microstructure–Stiffness Relationships of Common Yew and Norway Spruce. Strain. 48 (4). 306-316.
Status: Publicerad -
De Borst, K., Bader, T.K., Wikete, C. (2012). Microstructure-stiffness relationships of ten European and tropical hardwood species. Journal of Structural Biology. 177 (2). 532-542.
Status: Publicerad -
Eitelberger, J., Bader, T.K., De Borst, K., Jäger, A. (2012). Multiscale prediction of viscoelastic properties of softwood under constant climatic conditions. Computational materials science. 55. 303-312.
Status: Publicerad -
Alfredsen, G., Bader, T.K., Dibdiakova, J., Filbakk, T., Bollmus, S., et al. (2012). Thermogravimetric analysis for wood decay characterisation. European Journal of Wood and Wood Products. 70 (4). 527-530.
Status: Publicerad -
Jäger, A., Bader, T.K., Hofstetter, K., Eberhardsteiner, J. (2011). The relation between indentation modulus, microfibril angle, and elastic properties of wood cell walls. Composites. Part A, Applied science and manufacturing. 42 (6). 677-685.
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Konnerth, J., Eiser, M., Jäger, A., Bader, T.K., Hofstetter, K., et al. (2010). Macro- and micro-mechanical properties of red oak wood (Quercus rubra L.) treated with hemicellulases. Holzforschung. 64 (4). 447-453.
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Bader, T.K., Hofstetter, K., Hellmich, C., Eberhardsteiner, J. (2010). The poroelastic role of water in cell walls of the hierarchical composite “softwood”. Acta Mechanica. 217 (1). 75-100.
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Bader, T.K., Hofstetter, K., Hellmich, C., Eberhardsteiner, J. (2010). Poromechanical scale transitions of failure stresses in wood : from the lignin to the spruce level. Zeitschrift für angewandte Mathematik und Mechanik. 90 (10-11). 750-767.
Status: Publicerad
Artikel i tidskrift (Övrigt vetenskapligt)
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Dodoo, A., Dorn, M., Olsson, A., Bader, T.K. (2022). Structural engineering and carbon footprints of CLT buildings : Commentary. Buildings & Cities. 17 January.
Status: Publicerad -
Füssl, J., Bader, T.K., Eberhardsteiner, J. (2012). Computational Mechanics for Advanced Timber Engineering : from material modeling to structural applications. IACM Expressions. (32). 6-11.
Status: Publicerad
Bok (Övrigt vetenskapligt)
- Bader, T.K. (2008). Adaptability and Structural Design of Stadia. Saarbrücken, VDM Verlag Dr. Müller Aktiengesellschaft & Co. KG.
Doktorsavhandling, monografi (Övrigt vetenskapligt)
- Bader, T.K. (2011). Mechanical properties of sound and of deteriorated softwood at different length scales : Poromicromechanical modeling and experimental investigations. Doctoral Thesis. Vienna, Vienna University of Technology. 147.
Kapitel i bok, del av antologi (Refereegranskat)
- Bader, T.K., Ormarsson, S. (2023). Modeling the Mechanical Behavior of Wood Materials and Timber Structures. Springer Handbook of Wood Science and Technology. Springer. 507-568.
- Lemaitre, R., Bocquet, J., Schweigler, M., Bader, T.K. (2018). Beam-on-foundation modelling as an alternative design method for single fastener connections. Design of Connections in Timber Structures : A state-of-the-art report by COST Action FP1402/WG3. Aachen, Shaker Verlag. 207-220.
- Bocquet, J., Lemaitre, R., Bader, T.K. (2018). Design recommendations and example calculations for dowel-type connections with multiple shear planes. Design of Connections in Timber Structures : A state-of-the-art report by COST Action FP1402/WG3. Aachen, Shaker Verlag. 241-295.
- Bader, T.K., Bocquet, J., Schweigler, M., Lemaitre, R. (2018). Numerical modeling of the load distribution in multiple fastener connections. Design of Connections in Timber Structures : A state-of-the-art report by COST Action FP1402/WG3. Aachen, Shaker Verlag. 221-239.
Konferensbidrag (Refereegranskat)
- Schweigler, M., Bader, T.K., Abrahamsson, J., La Fleur, F. (2023). Experimental Investigation of Moment Capacity and Rotational Stiffness of Wall-to-Floor Connections in Cross-Laminated Timber (CLT) Buildings. Experimental Mechanics in Engineering and Biomechanics - Proceedings ICEM2020th International Conference on Experimental Mechanics, Porto 2-7 July 2023.
- Schweigler, M., Lemaitre, R., Shehadeh, Z., Bader, T.K. (2023). Moisture and Assembly History Effects on Embedment Properties of Steel Dowels in Spruce and Birch Loaded in Grain Direction.
- Olsson, A., Bader, T.K. (2023). A design model for out of plane bending of CLT with consideration of properties of lamellas and finger joints. International Network on Timber Engineering Research : Meeting fifty-six Biel/Bienne, Switzerland August 2023. 191-210.
- Gikonyo, J., Binder, E., Schweigler, M., Bader, T.K. (2023). Numerical Modelling of a Cross-Laminated Timber-to-Concrete Dowel-Type Connection Using the Beam-on-Foundation Model. Proceedings from the 13th World Conference on Timber Engineering 2023. 3101-3110.
- Larsson, C., Abdeljaber, O., Bader, T.K., Dorn, M. (2022). Modal Analysis and Finite Element Model Updating of a Timber-concrete Hyblrid Building. Proceedings of SHATIS 2022 : 6th International Conference on Structural Health Assessment of Timber Structures, 7-9 September 2022, Prague, 2022. 193-199.
- Binder, E., Derkowski, W., Bader, T.K. (2022). Hybrid modeling approach for time-dependent behavior of timber-concrete-composite structures. fib Symposium. 1284-1293.
- Schweigler, M., Bader, T.K., Sabaa, S. (2022). Design of moment loaded steel contact connections at the narrow face and side face of CLT panels. INTER: International Network on Timber Engineering Research.
- Akter, S.T., Bader, T.K., Serrano, E. (2021). Stiffness of cross-laminated timber (CLT) wall-to-floor-to-wall connections in platform-type structures. World Conference on Timber Engineering 2021, WCTE 2021.
- Schweigler, M., Vedovelli, M., Lemaitre, R., Bocquet, J., Sandhaas, C., et al. (2021). Beam-on-Foundation Modeling as an Alternative Design Method for Timber Joints with Dowel-Type Fasteners – Part 3 : Second Order Theory Effects for Considering the Rope Eff. INTER : International Network on Timber Engineering Research.
- Gikonyo, J., Schweigler, M., Bader, T.K. (2021). A spring model for prediction of the nonlinear embedment load-displacement behaviour of dowel-type fasteners in cross-laminated timber. World Conference on Timber Engineering 2021, WCTE 2021.
- Schweigler, M., Akter, S.T., Ncube, N., Sabaa, S., Johansson, T., et al. (2021). Non-uniform compressive loading of cross-laminated timber (CLT) perpendicular to the grain. World Conference on Timber Engineering 2021, WCTE 2021.
- Lemaitre, R., Bocquet, J.F., Schweigler, M., Bader, T.K. (2021). Beam-on-Foundation Modelling as an Alternative Design Method for Timber Joints with Dowel-Type Fasteners : Part 4: Joints Subjected to In-Plane Loading. INTER Proceedings, 2021: International Network on Timber Engineering Research 2021,.
- Akter, S.T., Bader, T.K., Serrano, E. (2019). Modelling of wood under compression perpendicular to the grain with rolling shear in cross-laminated timber. Presented at COMPLAS 2019 - XV International Conference on Computational Plasticity: Fundamentals and Applications, Barcelona, Spain, September 3-5, 2019.
- Muszyński, L., Akter, S.T., Nairn, J., Bader, T.K. (2019). On the need for reliable rolling shear characteristics in CLT lamellas and for efficient related test methods. Bool of abstract: CompWood 2019, International Conference on Computational Methods in Wood Mechanics – from Material Properties to Timber Structures. June 17-19, 2019, Växjö, Sweden..
- Lemaitre, R., Bocquet, J., Schweigler, M., Bader, T.K. (2019). Beam-on-Foundation Modelling as an Alternative Design Method for Timber Joints with Dowel-Type Fasteners : Part 2: Modelling Techniques for Multiple Fastener Connections.
- Schweigler, M., Bader, T.K., Bocquet, J., Lemaitre, R., Sandhaas, C. (2019). Embedment test analysis and data in the context of phenomenological modeling for dowelled timber joint design.
- Akter, S.T., Bader, T.K., Serrano, E. (2019). Modeling of wood under combination of normal stresses with rolling shear stress. Presented at CompWood 2019 - International Conference on Computational Methods in Wood Mechanics - from material properties to Timber Structures, Växjö, Sweden, June 17-19, 2019.
- Schweigler, M., Bader, T.K. (2019). Numerical modeling of dowel-type connections in soft- and hardwoods including the rope effect.
- Akter, S.T., Bader, T.K., Enquist, B. (2018). Failure envelope for interaction of stresses perpendicular to the grain with rolling shear stress in wood. 6th European Conference on Computational Mechanics (ECCM 6), 7th European Conference on Computational Fluid Dynamics (ECFD 7), 11 – 15 June 2018, Glasgow, UK.
- Schweigler, M., Bader, T.K. (2018). Predicting strength of dowel-type timber connections with rope effect. Engineering Mechanics Institute Conference (EMI 2018) May 29 - June 1, 2018, Cambridge, Massachusetts, USA.
- Lemaitre, R., Bocquet, J., Schweigler, M., Bader, T.K. (2018). Beam-on-foundation modelling as an alternative design method for timber joints with dowel-type fasteners : Part 1: Strength and stiffness per shear plane of single-fastener joints.. INTER Proceedings, 2018 : International Network on Timber Engineering Research 2018.
- Godinho, P.M.J.D.S., Bader, T.K., Eberhardsteiner, J., Hellmich, C. (2018). Multiscale modelling of transversely isotropic and anisotropic planar fiber networks : current results for elasticity and strength of paper, and potential applications to related materials. Engineering Mechanics Institute Conference 2018 (EMI 2018), Cambridge, Massachusetts, USA.
- Bader, T.K., Schweigler, M. (2018). Numerical modelling of the rope effect in laterally loaded dowel-type connections. 6th European Conference on Computational Mechanics (ECCM 6), 7th European Conference on Computational Fluid Dynamics (ECFD 7), 11 – 15 June 2018, Glasgow, UK.
- Godinho, P.M., Jajcinovic, M., Bader, T.K., Fischer, W.J., Hirn, U., et al. (2017). A continuum micromechanics approach to the strength of planar fiber networks : paper material applications. Vienna Young Scientists Symposium, June 1-2, 2017, Vienna, Austria.
- Godinho, P.M., Jajcinovic, M., Bader, T.K., Fischer, W.J., Bauer, W., et al. (2017). A continuum micromechanics approach to the strength of planar fiber networks : paper material applications. CompWood 2017 - Computational Methods in Wood Mechanics - From Material Properties to Timber Structures : Programme & Book of Abstract.
- Bader, T.K., Bocquet, J., Schweigler, M., Lemaitre, R. (2017). Numerical modeling of the load distribution in multiple fastener joints. International Conference on Connections in Timber Engineering – From Research to Standards : Proceedings of the Conference of COST Action FP1402 at Graz University of Technology. 136-152.
- Bader, T.K., Vessby, J. (2017). Modeling displacement path dependence in nailed sheathing-to-framing connections. CompWood 2017 - Computational Methods in Wood Mechanics - from Material Properties to Timber Structures : Programme & Books of Abstracs.
- Schweigler, M., Bader, T.K., Hochreiner, G., Eberhardsteiner, J. (2017). An engineering modeling approach for the load-deformation behavior of multi-dowel connections in timber structures. EMI 2017: Engineering Mechanics Institute Conference, June 4-7, 2017, San Diego.
- Schweigler, M., Bader, T.K., Hochreiner, G., Eberhardsteiner, J. (2016). An Engineering Modeling Approach for the Non-Linear Load-Displacement Behavior of Single Dowel Connections : Parameter Study. Proceedings of the 2016 World Conference on Timber Engineering (WCTE).
- Bader, T.K., Schweigler, M., Hochreiner, G., Eberhardsteiner, J. (2016). Load Distribution in Multi-Dowel Timber Connections under Moment Loading : Integrative Evaluation of Multiscale Experiments. Proceedings of the 2016 World Conference on Timber Engineering (WCTE).
- Hochreiner, G., Schweigler, M., Riedl, C., Bader, T.K., Eberhardsteiner, J. (2016). Matrix Failure of Multi-Dowel Type Connections Engineering Modelling and Parameter Study. Proceedings of the 2016 World Conference on Timber Engineering (WCTE).
- Dorn, M., Bader, T.K. (2016). Non-Linear Connection Models in Timber Engineering. Proceedings of the 2016 World Conference on Timber Engineering (WCTE).
- Hochreiner, G., Bader, T.K., Schweigler, M., Esser, G., Hagmann, S., et al. (2015). The Historic Roof Structure of the Spanish Riding School in Vienna : Structural Assessment. Proceedings of the International Conference on Structural Health Assessment of Timber Structures, SHATIS15. 248-259.
- Bader, T.K., Dorn, M., Esser, G., Hochreiner, G. (2015). The Historical Roof Structure of the Leopold Wing of the Vienna Hofburg Palace : Structural Assessment. Proceedings of the International Conference on Structural Health Assessment of Timber Structures (SHATIS'15).
- Bader, T.K., Schweigler, M., Hochreiner, G., Eberhardsteiner, J., Dorn, M., et al. (2015). Integrative Research for an Enhanced Design of Dowel Connections. Proceedings of the EUROMECH Colloquium 556 on Theoretical, Numerical, and Experimental Analyses in Wood Mechanics.
- Lederer, W., Bader, T.K., Dorn, M., Muszynski, L. (2012). Development of Integrated Imaging Methods for Investigation of Micromechanics of Dowel Connections for Engineered Wood Components. CD-ROM Proceedings of the 6th European Congress on Computational Methods in Applied Sciences and Engineering (ECCOMAS 2012).
- Dorn, M., Karin, D.B., Bader, T.K., Eberhardsteiner, J. (2012). Numerical Simulations of the Loading Process of Dowel-Type Timber Connections. CD-ROM Proceedings of the 6th European Congress on Computational Methods in Applied Sciences and Engineering (ECCOMAS 2012).
- Braovac, S., Fackler, K., Bader, T.K., Ters, T. (2011). Chemical Composition of the Archaeological Oak Wood from the Oseberg Ship. Cultural Heritage Preservation.EWCHP - 2011 : Proceedings of the European Workshop on Cultural Heritage Preservation. Berlin, Germany, September 26 to 28, 2011. 156-163.
- Bader, T.K., Braovac, S., Fackler, K., Hofstetter, K. (2011). Stiffness Properties of the Archaeological Oak Wood from the Oseberg Ship. Cultural Heritage Preservation.EWCHP - 2011 : Proceedings of the European Workshop on Cultural Heritage Preservation. Berlin, Germany, September 26 to 28, 2011. 164-170.
- Hofstetter, K., Bader, T.K., Dorn, M. (2010). The Benefit of Micromechanical Modeling in Timber Engineering. Proceedings of the 11th World Conference on Timber Engineering, June 20-24, 2010, Riva del Garda, Italy.
Konferensbidrag (Övrigt vetenskapligt)
- Binder, E., Derkowski, W., Bader, T.K. (2023). Short-term creep tests for shear connections of timber-concrete-composite slabs. Experimental Mechanics in Engineering and Biomechanics : Proceedings ICEM2020th International Conference on Experimental Mechanics, Porto 2-7 July 2023. 957-958.
- Schweigler, M., Bader, T.K., Eberhardsteiner, J. (2016). The influence of displacement boundary conditions on the embedment behavior of dowel-type fasteners. Presented at 33nd Danubia-Adria Symposium on Advances in Experimental Mechanics, Portorož, Slovenia, 2016.
- Schweigler, M., Bader, T.K., Hochreiner, G., Eberhardsteiner, J. (2016). A Novel Approach for the Load-Displacement Behavior of Single-Dowel Connections in Laminated Veneer Lumber. 17th International Conference on Experimental Mechanics, Rhodes, Greece, July 3-7, 2016.
- Bader, T.K., Schweigler, M., Hochreiner, G., Eberhardsteiner, J., Serrano, E., et al. (2016). Experimental Assessment of the Load Distribution in Multi-Dowel Timber Connections. 17th International Conference on Experimental Mechanics, Rhodes, Greece, July 3-7, 2016.
- Schweigler, M., Bader, T.K., Hochreiner, G., Eberhardsteiner, J. (2015). Experimental Characterization of Dowel Connections beyond the Elastic Domain. Presented at 32nd Danubia-Adria-Symposium (DAS 32). 62-63.
- Wagner, L., Bader, T.K. (2015). Cell Wall Properties of Archaelogical Oak Wood from the Vasa Shipwreck: A Nanoindentation Study. 32nd Danubia-Adria-Symposium (DAS 32). 162-163.
- Wagner, L., Bader, T.K., Eberhardsteiner, J., De Borst, K. (2015). Consequences of Microbial Decay on Mechanical Properties of Wood Cell Walls. .
- Lederer, W., Bader, T.K., Eberhardsteiner, J. (2015). Ductility of the Embedment Behavior of Steel Dowels in Wood - Permanent Deformations and the Influence of Reinforcements. 20th Inter-InstituteSeminar for Young Researchers ; Jubilee Sessionfor Professor Zenon Waszczyszyn : ProgrammeandBook of Abstracts ; October 9-10, 2015, Cracow, Poland. 27.
- Schweigler, M., Bader, T.K., Hochreiner, G., Eberhardsteiner, J. (2015). Load-Deformation Behavior of Single Dowel Connections in Timber Structures. . 166-167.
- Lederer, W., Bader, T.K., Eberhardsteiner, J. (2015). Experimental Investigations and Numerical Modelling of Dowel Connections in Timber Constructions. .
- Wagner, L., Bos, C., Bader, T.K., Eberhardsteiner, J. (2014). Moisture-Dependent Mechanical Properties of Softwood and Hardwood Cell Walls: A Nanoindentation Study. 31st Danubia-Adria Symposium on Advances in Experimental Mechanics, September 24-27, 2014, Kempten. 151-152.
- Schweigler, M., Bader, T.K., Hochreiner, G., Eberhardsteiner, J. (2014). Ein baustatischer Modellierungsansatz für das Last-Verformungsverhalten von Stabdübelgruppen im Ingenieurholzbau. . 157-164.
- Wagner, L., Bader, T.K., De Borst, K. (2014). Micromechanical Modelling of Degration Processes in Wood. 11th. World Congress on Computational Mechanics (WCCM XI), 5th. European Conference on Computational Mechanics (ECCM V), 6th. European Conference on Computational Fluid Dynamics (ECFD VI), July 20 - 25, 2014, Barcelona, Spain.
- Bader, T.K., Schweigler, M., Hochreiner, G., Eberhardsteiner, J. (2014). Berechnungsmodell für das Last-Verformungsverhalten von Stabdübelgruppen im Ingenieurholzbau. Berichte der Fachtagung Baustatik-Baupraxis 12. 113-121.
- Schweigler, M., Bader, T.K., Eberhardsteiner, J. (2014). Load Direction Dependency of the Embedment Behaviour of Dowel-Type Fasteners in Laminated Veneer Lumber. 16th International Conference on Experimental Mechanics (ICEM16), July 7-11, 2014, University of Cambridge, UK.
- Wagner, L., Bos, C., Bader, T.K., Eberhardsteiner, J. (2014). Moisture-Dependent Mechanical Properties of Softwood and Hardwood Cell walls : A Nanoindentation Study. 16th International Conference on Experimental Mechanics (ICEM16), July 7-11, 2014, Cambridge.
- Lederer, W., Bader, T.K., Eberhardsteiner, J. (2013). Numerical and Experimental Investigations of the Elasto-Plastic Behaviour of Wood-Steel Dowel Connections. 19th Inter-Institute Seminar for Young Researchers. 29.
- Lederer, W., Bader, T.K., Eberhardsteiner, J. (2013). Numerical Modelling of Dowel Connections in Timber Constructions. .
- Bader, T.K., De Borst, K. (2013). Poroelastic properties of hardwood at different length scales. Poromechanics V : proceedings of the fifth Biot Conference on Poromechanics, July 10-12, 2013, Vienna, Austria. 1830-1836.
- Wagner, L., Bader, T.K., De Borst, K., Ters, T., Fackler, K. (2013). Cell wall properties of softwood deteriorated by fungi: combined chemical analyses, FT-IR spectroscopy, nanoindentation and micromechanical modelling. Proceedings IRG Annual Meeting.
- Bader, T.K., Muszynski, L., Lederer, W., Eberhardsteiner, J. (2013). Imaging the Micromechanical Response of Wood in Steel-Dowel Connections. . 109-110.
- Bader, T.K., De Borst, K., Eberhardsteiner, J. (2013). Micromechanical Modeling of Wood : Multiscale Modeling and Model Validation. . 20.
- Wagner, L., Bader, T.K., De Borst, K. (2013). Nanoindentation of Wood Cell Walls : Effects of Different Sample Preparation Methods. . 81-82.
- Bader, T.K., Muszynski, L. (2012). Integrative Method for Micromechanical Characterization of Wood in Steel-Dowel Connections. COST Action FP 0802 : Experimental and Computational Micro-Characterization Techniques in Wood Mechanics. 100-101.
- Wagner, L., Bader, T.K., De Borst, K. (2012). Mechanical Properties of Scots Pine (Pinus sylvestris L.) Cell Walls After Fungal Degradation : Multiscale Micromechanical Modeling and Experimental Validation. .
- Gamstedt, K., Bader, T.K., De Borst, K. (2012). Mixed Numerical-Experimental Methods in Wood Micromechanics. COST Action FP 0802 : Experimental and computional micro-characterization techniques in wood mechanics. 86-87.
- Wagner, L., Bader, T.K., De Borst, K., Eberhardsteiner, J. (2012). Nanoindentation to Study Within-Tree Variability of Wood Cell Wall Stiffness. 29th DANUBIA-ADRIA SYMPOSIUM on Advances in Experimental Mechanics, September 26-29, Belgrade, Serbia. 8-9.
- Wagner, L., Bader, T.K., Auty, D., De Borst, K. (2012). Control Parameters for Within-Tree Variability of Wood Stiffness at Different Length Scales : Multiscale Modeling and Experimental Investigations. COST Action FP0802 - Experimental and Computational Micro-Characterization Techniques in Wood Mechanics. 72-73.
- Bader, T.K., Wikete, C., De Borst, K. (2012). Elastic Properties of Hardwood at Different Length Scales Predicted by Means of a Micromechanical Model. Proceedings of the 6th European Congress on Computational Methods in Applied Sciences and Engineering (ECCOMAS 2012), Vienna University of Technology, Vienna, Austria.
- Wagner, L., Fackler, K., Bader, T.K., Ters, T., De Borst, K. (2012). Fungal Degradation of Scots Pine (Pinus sylvestris L.) Wood : Micromechanical and Microstructural Characterization at the Cell Wall Level. 7th International Plant Biomechanics Conference, August 20-24, 2012, Clermont-Ferrand, France.
- Bader, T.K., Hofstetter, K., Alfredsen, G., Bollmus, S. (2011). Decrease of stiffness properties of degraded wood predicted by means of micromechanical modeling. Proceedings of the International Research Group on Wood Protection IRG/WP 11-40570. 2-15.
- Wagner, L., Bader, T.K., Hofstetter, K., Fackler, K., Ters, T. (2011). Nanoindentation and Micromechanical Modeling to Explore the Mechanical Performance of Deteriorated Softwood. COST Action FP0802 - Experimental and Computational Micro-Characterization Techniques in Wood Mechanics. 61-62.
- Hellmich, C., Bader, T.K., Hofstetter, K., Eberhardsteiner, J. (2011). Role of Water in Cell Walls of the Hierarchical Composite "Softwood" : A Poroelastic Analysis. Engineering Mechanics Institute 2011 Conference (EMI 2011). 195.
- Bader, T.K., Hofstetter, K., Hellmich, C., Eberhardsteiner, J. (2011). From lignin to spruce : Poromechanical upscaling of wood strength. 2010 MRS Fall Meeting : Symposium V/NN/OO/PP – Soft Matter, Biological Materials and Biomedical Materials—Synthesis, Characterization and Applications. 75-80.
- Alfredsen, G., Bollmus, S., Bader, T.K., Hofstetter, K. (2011). Basidiomycete colonization of Scots pine sapwood quantified by qPCR and TGA. .
- Bader, T.K., Hofstetter, K., Hellmich, C., Eberhardsteiner, J. (2011). On the Relevance of Lignin Failure for Softwood Strength : a Poromicromechanical Approach. XI International Conference on Computational Plasticity - Fundamentals and Applications.
- Bader, T.K., Braovac, S., Hofstetter, K. (2010). Microstructure-Stiffness Relations of the Ancient Oak Wood from the Oseberg Ship. International Workshop on "Modeling Mechanical Behavior of Wooden Cultural Objects". 22-23.
- Mang, H., Höfinger, G., Jia, X., Hofstetter, K., Bader, T.K., et al. (2010). Computational Civil Engineering Mechanics - Elucidating General Features of Materials and Structures. .
- Wikete, C., Bader, T.K., Jäger, A., Hofstetter, K., Eberhardsteiner, J. (2010). Mechanical Properties and Microstructural Characteristics of Hardwood. 27th Danubia-Adria Symposium on Advances in Experimental Mechanics : September 22nd - 25th, 2010, Wrocław University of Technology, Wrocław, Poland. 237-238.
- Bader, T.K., Wikete, C., Jäger, A., Hofstetter, K., Eberhardsteiner, J. (2010). Mechanical Properties and Microstructural Characteristics of Hardwood. COST Action FP 0802 Workshop: Wood Structure/Function-Relationships, 5-8 October, 2010, Hamburg, Germany. 61.
- Bader, T.K., Hofstetter, K., Hellmich, C., Eberhardsteiner, J. (2010). Multiscale Microporomechanics of Softwood : Applications and Experimental Model Validation. IV European Conference on Computational Mechanics (ECCM 2010).
- Bader, T.K., Hofstetter, K. (2010). Pilzabbau von Holz : Quantifizierung des Steifigkeitsverlusts auf Basis von mikromechanischen Überlegungen. Wiener Holzschutztage 2010 : 25. - 26. November 2010, Wien. 50-55.
- Hofstetter, K., Eitelberger, J., Bader, T.K., Hellmich, C., Eberhardsteiner, J. (2009). Computational Multiscale Approach to the Mechanical Behavior and Transport Behavior of Wood. Computational Structural Engineering : Proceedings of the International Symposium on Computational Structural Engineering, held in Shanghai, China, June 22–24, 2009. 79-85.
- Bader, T.K., Hofstetter, K., Hellmich, C., Eberhardsteiner, J. (2009). Homogenization and Localization in a Multiscale Microporomechanical Model for Wood Strength. . 285-286.
- Bader, T.K., Hofstetter, K., Hellmich, C., Eberhardsteiner, J. (2009). Multiscale Microporomechanics Model for Estimation of Elastic Limit States of Softwood Materials. . 107-108.
- Jäger, A., Bader, T.K., Hofstetter, K., Eberhardsteiner, J. (2009). Identification of Elastic Properties of Wood Cell Walls by Means of Nanoindentation. 26th Danubia-Adria Symposium on Advances in Experimental Mechanics. 83-84.
- Hofstetter, K., Hellmich, C., Bader, T.K., Eberhardsteiner, J. (2008). Relevance of Microstructural Failure Mechanismus for Macroscopic Elastic Limit States of Wood. . 48-49.
- Hofstetter, K., Hellmich, C., Bader, T.K., Eberhardsteiner, J. (2008). Poro-micromechanical Estimates for Elastic Limit States of Wood. Eleventh East Asia-Pacific Conference on Structural Engineering and Construction. 550-551.
Konferensbidrag (Övrigt (populärvetenskap, debatt))
- Hochreiner, G., Bader, T.K., Schweigler, M., Eberhardsteiner, J. (2016). Timber Matrix Failure Modes in Multi-Dowel Connections. 17th International Conference on Experimental Mechanics, Rhodes, Greece, July 3-7, 2016.
Proceedings (redaktörskap) (Refereegranskat)
- Bader, T.K., Füssl, J., Olsson, A. (2019). CompWood 2019 - Computational Methods in Wood Mechanics - : From Material Properties to Timber Structures: Book of Abstracts.. Växjö, Linnaeus University Press. 110.
- Josef, F., Bader, T.K., Josef, E. (2017). CompWood 2017 - Computational Methods in Wood Mechanics - From Material Properties to Timber Structures : Programme & Book of Abstracts. Vienna, TU Verlag, Technische Universität Wien. 21.
Rapport (Övrigt vetenskapligt)
- Bader, T.K., Oscarsson, J., Olsson, A., Schweigler, M., Dorn, M., et al. (2024). Competitive CLT - Improving the competitive advantage of CLT-based building systems through engineering design andreduced carbon footprint : Final report. Thomas Bader, Department of Building Technology, Linnaeus University. 20.
- Bader, T.K., Schweigler, M., Anderson, D., Karlsson, H., Eriksson, G., et al. (2023). Engineering design for anefficient assembly of multi-storycross-laminated timber structures : A survey conducted between November 2020 and November 2021. 11.
Dataset (Refereegranskat)
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Schweigler, M., Bader, T.K., Bocquet, J., Lemaitre, R., Sandhaas, C. (2019). Database of embedment parameters from soft- and hardwoods. Växjö, Sweden, Linnaeus University.
The database includes embedment parameters from in total 1565 tests, taken from 7 reports originating from ENSTIB/LERMaB Epinal, Vienna University of Technology (IMWS, TU Wien), Linnaeus University Växjö (LNU), TU Delft and Karlsruhe Institute of Technology (KIT).It compromises parameters from embedment test on 6 soft- and hardwood spieces, 4 wood-based products, 4 dowel diameter, loaded at 7 different load-to-grain angles.
The embedment parameters can be used to describe load-displacement curves of steel dowels embedded in wood, being exploited in numerical models for single-dowel connections.
Embedment parameters given in the database are explained and discussed in:Schweigler, M., T. K. Bader, J.F. Bocquet, and C. Sandhaas (2019). "Embedment test analysis and data in the context of phenomenological modeling for dowelled timber joint design." In: Proceedings of INTER/52-07-08 , Tacoma, USA.
Update:2020-07-06: Parameters from embedment tests on birch (solid timber) are added Benistand, T. (2020).
References:
The database includes embedment parameters taken from following reports:
Benistand, T. (2019). “Comportements structurels des Essences de bois feuillus français en vue de leur meilleure intégration aux Eurocodes 5.” PhD thesis. University of Lorraine, France (in progress).
Benistand T, Bleron L., Bocquet J.F (2020) " Embedding Strength Prediction for European Hardwood Species" In: Proceedings INTER/53-07-9.
Blaß, H. J. and T. Uibel (2007). “Tragfähigkeit von stiftförmigen Verbindungsmitteln in Brettsperrholz (in German)”. In: Karlsruher Berichte zum Ingenieurholzbau Band 8.
Lemaître, R. (2020). “Développement d’un outil de calcul non linéaire de dimensionnement d’assemblages bois tridimensionnels soumis à des torseurs plans.” PhD thesis. University of Lorraine, France.
Sandhaas, C., G.J.P. Ravenshorst, H.J. Blass, and J.W.G. van de Kuilen (2013). “Embedment tests parallel-to-grain and ductility aspects using various wood species”. In: European Journal of Wood and Wood Products 71(5), pp. 599–608.
Schweigler, M., T. K. Bader, G. Hochreiner, G. Unger, and J. Eberhardsteiner (2016). “Load-to-grain angle dependence of the embedment behavior of dowel-type fasteners in laminated veneer lumber”. In: Construction and Building Materials 126, pp. 1020–1033.
Schweigler, M., T. K. Bader, J. Vessby, and J. Eberhardsteiner (2017). “Constrained displacement boundary conditions in embedment testing of dowel-type fasteners in LVL”. In: Strain 53(6). DOI: 10.1111/str.12238.
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