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Stability analysis for 3D frames using mixed corotational formulation
KTH, School of Architecture and the Built Environment (ABE), Civil and Architectural Engineering, Structural Engineering and Bridges.
KTH, School of Architecture and the Built Environment (ABE), Civil and Architectural Engineering, Structural Engineering and Bridges.ORCID iD: 0000-0003-2104-382X
2010 (English)In: SDSS-Rio 2010 Stability and ductility of steel structures / [ed] E. Batista, P. Vellasco, L. de Lima, 2010, 547-554 p.Conference paper, Published paper (Refereed)
Abstract [en]

The corotational technique is adopted for the analysis of 3D beams. The technique applies to atwo-noded element a coordinate system which continuously translates and rotates with the element. Inthis way, the rigid body motion is separated out from the deformational motion. Then, a mixedformulation is adopted for the derivation of the local element tangent stiffness matrix and nodal forces.The mixed finite element formulation is based on an incremental form of the two-field Hellinger-Reissnervariational principle to permit elasto-plastic material behavior. The proposed element can be used toanalyze the nonlinear buckling and postbuckling of 3D beams. The mixed formulation solution iscompared against the results obtained from a corotational displacement-based formulation having thesame beam kinematics. The superiority of the mixed formulation is clearly demonstrated.

Place, publisher, year, edition, pages
2010. 547-554 p.
National Category
Civil Engineering
Identifiers
URN: urn:nbn:se:kth:diva-72478Scopus ID: 2-s2.0-84890253622OAI: oai:DiVA.org:kth-72478DiVA: diva2:487643
Conference
SDSS-Rio 2010 Stability and ductility of steel structures. Rio de Janeiro, Brazil. September 8 - 10, 2010
Note
QC 20120425Available from: 2012-01-31 Created: 2012-01-31 Last updated: 2012-04-25Bibliographically approved

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Battini, Jean-Marc

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CiteExportLink to record
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