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Modeling slip in stress-laminated timber bridges: comparison of two finite-element-method approaches and test values
Chalmers University of Technology.
Luleå University of Technology, Department of Engineering Sciences and Mathematics, Wood Science and Engineering.ORCID iD: 0000-0002-0145-080X
Chalmers University of Technology.
2014 (English)In: Journal of Bridge Engineering, ISSN 1084-0702, E-ISSN 1943-5592, Vol. 19, no 9, article id 4014029Article in journal (Refereed) Published
Abstract [en]

Finite-element (FE) simulations of the deformation behavior of a 5.4-m-long, 8-m-wide, and 0.27-m-thick stress-laminated timber bridge deck were conducted. The simulation results were compared with full-scale test results when using a load resembling an axle load placed near the edge and when cycling the load between a high and low value. Two separate approaches to nonlinear FE modeling were used. The first FE model simulates a frictional slip between the glulam beams with an elastic-plastic material model. The second FE model simulates a frictional slip by modeling each discrete contact surface between each beam in the deck. The results show good agreement between simulation and test results and reveal that the simulation model that models contact surfaces produces slightly better results at the expense of a greater modeling effort and increased computational time. Hysteresis in the load versus deformation curves is clearly visible and was due to significant slip between the glulam beams, which was successfully simulated.Read More: http://ascelibrary.org/doi/abs/10.1061/%28ASCE%29BE.1943-5592.0000595

Place, publisher, year, edition, pages
2014. Vol. 19, no 9, article id 4014029
Keywords [en]
Civil engineering and architecture - Building engineering
Keywords [sv]
Samhällsbyggnadsteknik och arkitektur - Byggnadsteknik
National Category
Other Mechanical Engineering
Research subject
Wood Technology
Identifiers
URN: urn:nbn:se:ltu:diva-2671DOI: 10.1061/(ASCE)BE.1943-5592.0000595ISI: 000340730800002Scopus ID: 2-s2.0-84906239974Local ID: 05339732-b4b8-428f-9b02-07f47f7e5ae0OAI: oai:DiVA.org:ltu-2671DiVA, id: diva2:975524
Note
Validerad; 2014; 20140310 (matse)Available from: 2016-09-29 Created: 2016-09-29 Last updated: 2018-07-10Bibliographically approved

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Ekevad, Mats

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