A new thermo-elasto-plasticity constitutive theory for polycrystalline metals | |
Chen C(陈岑); Tang QH(汤奇恒); Wang ZQ(王自强) | |
发表期刊 | ACTA MECHANICA SINICA |
2015-06-01 | |
卷号 | 31期号:3页码:338-348 |
ISSN | 0567-7718 |
摘要 | In this study, the behavior of polycrystalline metals at different temperatures is investigated by a new thermo-elasto-plasticity constitutive theory. Based on solid mechanical and interatomic potential, the constitutive equation is established using a new decomposition of the deformation gradient. For polycrystalline copper and magnesium, the stress-strain curves from 77 to 764 K (copper), and 77 to 870 K (magnesium) under quasi-static uniaxial loading are calculated, and then the calculated results are compared with the experiment results. Also, it is determined that the present model has the capacity to describe the decrease of the elastic modulus and yield stress with the increasing temperature, as well as the change of hardening behaviors of the polycrystalline metals. The calculation process is simple and explicit, which makes it easy to implement into the applications.;In this study, the behavior of polycrystalline metals at different temperatures is investigated by a new thermo-elasto-plasticity constitutive theory. Based on solid mechanical and interatomic potential, the constitutive equation is established using a new decomposition of the deformation gradient. For polycrystalline copper and magnesium, the stress-strain curves from 77 to 764 K (copper), and 77 to 870 K (magnesium) under quasi-static uniaxial loading are calculated, and then the calculated results are compared with the experiment results. Also, it is determined that the present model has the capacity to describe the decrease of the elastic modulus and yield stress with the increasing temperature, as well as the change of hardening behaviors of the polycrystalline metals. The calculation process is simple and explicit, which makes it easy to implement into the applications. |
关键词 | Thermo-elasto-plasticity Constitutive Theory Yield Stress Hardening Behaviors Finite Temperature |
学科领域 | Engineering ; Mechanics |
DOI | 10.1007/s10409-015-0462-1 |
URL | 查看原文 |
收录类别 | SCI ; EI ; CSCD |
语种 | 英语 |
WOS记录号 | WOS:000357448500005 |
关键词[WOS] | Magnesium Alloy Az31b ; Finite-element-method ; Elevated-temperatures ; Crystal Plasticity ; Single-crystals ; Strain-rate ; Texture Evolution ; Flow-stress ; Hcp Metals ; Wide-range |
WOS研究方向 | Engineering ; Mechanics |
WOS类目 | Engineering, Mechanical ; Mechanics |
项目资助者 | National Natural Science Foundation of China [11021262, 11172303, 11132011] ; National Basic Research Program of China [2012CB937500] |
课题组名称 | LNM固体物理力学 |
论文分区 | 二类 |
力学所作者排名 | 1 |
引用统计 | |
文献类型 | 期刊论文 |
条目标识符 | http://dspace.imech.ac.cn/handle/311007/55335 |
专题 | 非线性力学国家重点实验室 |
通讯作者 | Wang ZQ(王自强) |
作者单位 | Chinese Acad Sci, Inst Mech, State Key Lab Nonlinear Mech, Beijing 100190, Peoples R China |
推荐引用方式 GB/T 7714 | Chen C,Tang QH,Wang ZQ. A new thermo-elasto-plasticity constitutive theory for polycrystalline metals[J]. ACTA MECHANICA SINICA,2015,31,3,:338-348. |
APA | Chen C,Tang QH,&Wang ZQ.(2015).A new thermo-elasto-plasticity constitutive theory for polycrystalline metals.ACTA MECHANICA SINICA,31(3),338-348. |
MLA | Chen C,et al."A new thermo-elasto-plasticity constitutive theory for polycrystalline metals".ACTA MECHANICA SINICA 31.3(2015):338-348. |
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