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External components of an automotive body are manufactured from a stamping of sheet metal plane resulting in a final product with variable thickness due to different levels of stretch and a heterogeneous distribution of residual plastic strain. Generally, these informations are not considered in numerical simulations of the product and may cause considerable errors in the analysis of stamped parts involving nonlinearities. This work aimed to simulate an event called palm-printing in an automobile fender, with and without the consideration of the final data of the numerical simulation of the stamping process (final thickness and residual plastic strain) and the results compared with those obtained experimentally. Results showed that the consideration of thickness and hardening from the stamping process can improve the correlation of final results in quasi-static nonlinear analysis.

The application of finite element method (FEM) is widespread used to structural analysis. However the prescription or the consideration of a porous material parameter is still challenging. Thus, this work proposes a methodology applied to the finite element method considering a value of porosity. The goal is evaluate the structural behavior considering prescription of material porosity for 03 (three) loading conditions: analysis of natural frequencies extraction; analysis for concentrated load; analysis for inertial loading. Also is presented a comparison between different mesh refinement (size of element), and damaged elasticity modulus.