NDLI: Uma formulação consistente para análise não-linear de pórticos planos de aço considerando imperfeições iniciais e tensões residuais

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Uma formulação consistente para análise não-linear de pórticos planos de aço considerando imperfeições iniciais e tensões residuais

Content Provider	Semantic Scholar
Author	Lavall, Armando César Campos
Copyright Year	1996
Abstract	LAVALL, A.C. C. A consistent formulation for nonlinear analysis of steel plane trames considering initial imperfections and residual stresses. São Carlos, 1996. 265p. Tese (Doutorado) Escola de Engenharia de São Carlos, Universidade de São Paulo. A consistent finite element formulation to consider material and geometric nonlinearities of steel plane frames is presented. Residual stresses and initial imperfections are considered to evaluate steel columns failure criteria based on the ultimate strength and also to investigate the nonlinear behavior of steel plane frames. Some qualitative considerations are made on the initial imperfections and residual stresses influence on the practical steel columns design. A general theory considering self equilibrated residual stresses is developed based on the Lagrangian formulation. Corotacional technique is used to obtain the tangent stiffness matrix of plane frame taking the initial imperfection into account. A stand alone code has been written in FORTRAN and implemented on a microcomputer platform to perform incremental-iterative analysis of nonlinear elastoplastic plane frame problems. The frame element is made up of layers such that the plastic region can be readily identified and any kind of residual stresses through the cross section area can be taken into account in the analysis. Some examples are presented and their results compared to others in the literature. The multistory building analyses using the plane frame element presented in this research has shown to be very effective and useful to practical applications.
File Format	PDF HTM / HTML
DOI	10.11606/T.18.2018.tde-02042018-112300
Alternate Webpage(s)	http://www.teses.usp.br/teses/disponiveis/18/18134/tde-02042018-112300/publico/Tese_Lavall_ArmandoCC.pdf
Alternate Webpage(s)	https://doi.org/10.11606/T.18.2018.tde-02042018-112300
Language	English
Access Restriction	Open
Content Type	Text
Resource Type	Article

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