Associative coupled thermoplasticity at finite strain with temperature-dependent material parameters |
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| Affiliation: | 1. Institut für Strahlwerkzeuge (IFSW), University of Stuttgart, Pfaffenwaldring 43, Stuttgart 70569, Germany;2. Stuttgart Center of Photonic Engineering (SCoPE), University of Stuttgart, Pfaffenwaldring 43, Stuttgart 70569, Germany;1. ENEA, The Italian National Agency for New Technologies, Energy and Sustainable Economic Development, Rome, Italy;2. Center of Excellence DEWS, University of L’Aquila, Via Vetoio, L’Aquila, Italy |
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| Abstract: | The paper deals with associative coupled thermoplasticity at finite strains. J2 plasticity model is based on hyperelastic formulation with multiplicative decomposition of deformation gradient into elastic and plastic parts. As a novel aspect, temperature dependence of all material parameters is introduced. For such model, variational procedure is carried out and discretization by the mixed finite element method is performed. Consistent linearization is carried out and algorithmic elasto-plastic tangent moduli are given. Verification of algorithm is provided by two examples. |
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