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
Rok vydání:	2020
Předmět:	Materials science Partial differential equation Mechanics of Materials Applied Mathematics Mechanical Engineering Finite strain theory Isotropy Hardening (metallurgy) Logarithmic rate Single parameter Shape-memory alloy Mechanics Anisotropy
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
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::d63855a8e26b6628afb2a97e7cc63e33 https://doi.org/10.1007/s10483-020-2659-7 Zobrazit plný text záznamu Plný text ve formátu PDF