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Efficient local formulation for elasto-plastic corotational thin-walled beams
KTH, School of Architecture and the Built Environment (ABE), Civil and Architectural Engineering, Structural Engineering and Bridges.ORCID iD: 0000-0003-2104-382X
2011 (English)In: The International Journal for Numerical Methods in Biomedical Engineering, ISSN 2040-7939, Vol. 27, no 4, 498-509 p.Article in journal (Refereed) Published
Abstract [en]

A local elasto-plastic formulation, based on a low-order nonlinear strain expression using Bernoulli beam kinematics, is presented in this paper. This element, together with the corotational framework proposed in (Comput. Meth. Appl. Mech. Eng. 2002; 191(17): 1755-1789) can be used to analyze the nonlinear buckling and postbuckling of thin-walled beams with arbitrary cross-section. The formulation captures both the Saint-Venant and warping torsional effects of open cross-sections. Numerical examples show that this local formulation is more efficient than the one proposed in (Comput. Meth. Appl. Mech. Eng. 2002; 191(51):5811-5831) based on a Timoshenko beam assumption.

Place, publisher, year, edition, pages
2011. Vol. 27, no 4, 498-509 p.
Keyword [en]
nonlinear analysis, corotational formulation, beam element, arbitrary cross-section, elastoplasticity
National Category
Mathematics
Identifiers
URN: urn:nbn:se:kth:diva-39197DOI: 10.1002/cnm.1311ISI: 000288815400004Scopus ID: 2-s2.0-79953051780OAI: oai:DiVA.org:kth-39197DiVA: diva2:439557
Available from: 2011-09-08 Created: 2011-09-08 Last updated: 2015-07-27Bibliographically approved

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Battini, Jean-Marc

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