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首页> 外文期刊>Finite elements in analysis & design >Finite deformation analysis of visco-hyperelastic materials via solid tetrahedral finite elements
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Finite deformation analysis of visco-hyperelastic materials via solid tetrahedral finite elements

机译：Finite deformation analysis of visco-hyperelastic materials via solid tetrahedral finite elements

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摘要

An alternative solid finite element formulation for large deformation analysis of viscoelastic materials is proposed. This new approach is based on positions and makes possible a robust implementation of an isoparametric solid tetrahedral that presents no locking when dealing with complex stress, strain and strain rate for general structural analysis. A consistent way to write internal variables that accounts for finite viscoelastic strains is proposed. In this alternative methodology the neo-Hookean hyperelastic law is taken into account together with the Zener viscoelastic model. The evolution law is described in terms of a rate equation involving the viscous right Cauchy-Green stretch tensor. The study is dedicated to homogeneous materials under isothermal and quasi-static conditions. The nonlinear solution procedure is performed via the Newton-Raphson iterative technique and the backward-Euler method.

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