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|Title:||Geometric stiffness matrix for generic cross‐ sections|
Santos, Thiago Dias dos
Vieira Junior, Luiz Carlos Marcos
Ziemian, Ronald D.
Almeida, Saulo José de Castro
|Abstract:||This paper presentsthe derivation of a geometric stiffness matrix, which considers cross‐sectional warping of a generic tridimensional thin‐walled member with open cross‐section. Additional terms were added to the derivation previously published to take in account uniform axial deformation together with bimoment contribution. The derivation is implemented in a new software developed by the authors: Structural System Analysis, SSA, which is based on the MASTAN2 kernel and written in MATLAB. A series of examples are presented and the results are compared to the solution given by a commercial finite elementsoftware. Satisfactory agreement wasfound when axial and major axis loading is applied; however, when a member is loaded in the minor axis direction, the results are considerably different indicating that more research shall be carried out to accurately predict the buckling load in the minor axis|
|Editor:||CBCA - Cantro Brasileiro da Construção em Aço|
|Appears in Collections:||FEC - Artigos e Outros Documentos|
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