Inverse modeling and shape optimization of an energy absorber / Modelamento inverso e otimização de forma de um absorvedor de impacto

AUTOR(ES)
DATA DE PUBLICAÇÃO

2007

RESUMO

This work presents a shape optimization methodology applied to structures submitted to impact loads in order to improve their crashworthiness. To this end, it is necessary to know the structural material properties, which were obtained using a dual experimental-optimization methodology. Optimum parameters are obtained for the Cowper-Symonds and Johnson-Cook strain rate sensitive constitutive laws which best fit the material experimental data. These parameters were then used in the analysis of a complex structure, which is crashworthy optimized using a Response Surface Methodology

ASSUNTO(S)

inverse modeling shape optimization crashworthiness johnson-cook parametric optimization propriedades mecanicas materiais - deformações structural impact materiais - propriedades cowper-symonds material characterization

ACESSO AO ARTIGO

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