Abstract
We propose a model for rate-independent evolution in elastoplastic materials under external loading, which allows large strains. In the setting of strain-gradient plasticity with multiplicative decomposition of the deformation gradient, we prove the existence of the so-called energetic solution. The stored energy density function is assumed to depend on gradients of minors of the deformation gradient which makes our results applicable to shape-memory materials, for instance.
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Acknowledgements
This work was supported by the GAČR projects 18-03834S (MK & JZ), 21-06569K (MK), and by the DFG Priority Programme (SPP) 2256 (JZ).
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Kružík, M., Zeman, J. Elastoplasticity of gradient-polyconvex materials. Z. Angew. Math. Phys. 72, 174 (2021). https://doi.org/10.1007/s00033-021-01603-w
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DOI: https://doi.org/10.1007/s00033-021-01603-w