New finite strain elastoplastic equations for accurately and explicitly simulating pseudoelastic-to-plastic transition effects of shape memory alloys
Autor: | Heng Xiao, Hui-Feng Xi, Lin Zhan, Si-Yu Wang |
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Rok vydání: | 2020 |
Předmět: | |
Zdroj: | Applied Mathematics and Mechanics. 41:1583-1596 |
ISSN: | 1573-2754 0253-4827 |
Popis: | A new finite strain elatoplastic J2-flow model with coupling effects of both isotropic and anisotropic hardening is proposed with the co-rotational logarithmic rate. In terms of certain single-variable shape functions representing uniaxial loading and unloading curves, explicit multi-axial expressions for the three hardening quantities incorporated in the new model proposed are derived in unified forms for the purpose of automatically and accurately simulating complex pseudoelastic-to-plastic transition effects of shape memory alloys (SMAs) under multiple loading-unloading cycles. Numerical examples show that with only a single parameter of direct physical meaning for each cycle, accurate and explicit simulations may be achieved for extensive data from multiple cycle tests. |
Databáze: | OpenAIRE |
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