Study and development of computational code based on the finite element method to dynamic geometrically nonlinear analysis of bidimensional solids / Estudo e desenvolvimento de código computacional baseado no método dos elementos finitos para análise dinâmica não linear geométrica de sólidos bidimensionais

AUTOR(ES)
DATA DE PUBLICAÇÃO

2006

RESUMO

The main goal of this work is the development of a formulation and its computational implementation, based on the finite element method (FEM), to analyze the dynamic geometrically nonlinear behavior of bidimensional solids. The geometrically nonlinear behavior is treated with a positional formulation classified as total Lagrangean with exact kinematics. In the study of the dynamic behavior, a time integration algorithm based on the family of time integrators of Newmark is applied. In order to consider the impact, a technique based on the time integrator of Newmark, modified to assure its stabilization, is used. This technique limits the position of each node that suffers impact. The developed computational code is validated through benchmarks of scientific literature. Examples with static geometrically nonlinear and dynamic geometrically nonlinear behavior, with or without impact, are analyzed

ASSUNTO(S)

geometrically nonlinear analysis dinâmica finite element method elementos finitos análise não linear geométrica impacto dynamic impact

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