A strain rate dependent thermo-elasto-plastic constitutive model for crystalline metallic materials

doi:10.1038/s41598-021-88333-1

CORC > 力学研究所 > 中国科学院力学研究所 > 非线性力学国家重点实验室

	A strain rate dependent thermo-elasto-plastic constitutive model for crystalline metallic materials
	Chen, Cen 2; Wang, TzuChiang 1,2
刊名	SCIENTIFIC REPORTS
	2021-04-23
卷号	11 期号:1 页码:9
ISSN号	2045-2322
DOI	10.1038/s41598-021-88333-1
通讯作者	Chen, Cen(chencen@lnm.imech.ac.cn)
英文摘要	The strain rate and temperature effects on the deformation behavior of crystalline metal materials have always been a research hotspot. In this paper, a strain rate dependent thermo-elasto-plastic constitutive model was established to investigate the deformation behavior of crystalline metal materials. Firstly, the deformation gradient was re-decomposed into three parts: thermal part, elastic part and plastic part. Then, the thermal strain was introduced into the total strain and the thermo-elastic constitutive equation was established. For the plastic behavior, a new relation between stress and plastic strain was proposed to describe the strain rate and temperature effects on the flow stress and work-hardening. The stress-strain curves were calculated over wide ranges of strain rates (10(-6)-6000 s(-1)) and temperatures (233-730 K) for three kinds of crystalline metal materials with different crystal structure: oxygen free high conductivity copper for face centered cubic metals, Tantalum for body centered cubic metals and Ti-6Al-4V alloy for two phase crystal metals. The comparisons between the calculation and experimental results reveal that the present model describes the deformation behavior of crystalline metal materials well. Also, it is concise and efficient for the practical application.
资助项目	National Natural Science Foundation of China[11702295] ; National Natural Science Foundation of China[11790292] ; Strategic Priority Research Program of the Chinese Academy of Sciences[XDB22040503]
WOS关键词	LOADING RESPONSES ; FCC METALS ; WIDE-RANGE ; DEFORMATION ; TEMPERATURE ; BEHAVIOR ; COPPER ; POLYCRYSTALS ; STRESS ; ALLOY
WOS研究方向	Science & Technology - Other Topics
语种	英语
WOS记录号	WOS:000644948300006
资助机构	National Natural Science Foundation of China ; Strategic Priority Research Program of the Chinese Academy of Sciences
内容类型	期刊论文
源URL	[http://dspace.imech.ac.cn/handle/311007/86684]
专题	力学研究所_非线性力学国家重点实验室
通讯作者	Chen, Cen
作者单位	1.Univ Chinese Acad Sci, Sch Engn Sci, Beijing 100049, Peoples R China 2.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, Cen,Wang, TzuChiang. A strain rate dependent thermo-elasto-plastic constitutive model for crystalline metallic materials[J]. SCIENTIFIC REPORTS,2021,11(1):9.
APA	Chen, Cen,&Wang, TzuChiang.(2021).A strain rate dependent thermo-elasto-plastic constitutive model for crystalline metallic materials.SCIENTIFIC REPORTS,11(1),9.
MLA	Chen, Cen,et al."A strain rate dependent thermo-elasto-plastic constitutive model for crystalline metallic materials".SCIENTIFIC REPORTS 11.1(2021):9.