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

doi:10.1038/s41598-021-88333-1

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	A strain rate dependent thermo-elasto-plastic constitutive model for crystalline metallic materials
	Chen C(陈岑)1 ; Wang ZQ(王自强)1,2
通讯作者	Chen, Cen([email protected])
发表期刊	SCIENTIFIC REPORTS
	2021-04-23
卷号	11 期号:1 页码:9
ISSN	2045-2322
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.
DOI	10.1038/s41598-021-88333-1
收录类别	SCI
语种	英语
WOS记录号	WOS:000644948300006
关键词[WOS]	LOADING RESPONSES ; FCC METALS ; WIDE-RANGE ; DEFORMATION ; TEMPERATURE ; BEHAVIOR ; COPPER ; POLYCRYSTALS ; STRESS ; ALLOY
WOS研究方向	Science & Technology - Other Topics
WOS类目	Multidisciplinary Sciences
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]
项目资助者	National Natural Science Foundation of China ; Strategic Priority Research Program of the Chinese Academy of Sciences
论文分区	二类/Q1
力学所作者排名	1
RpAuthor	Chen, Cen
引用统计	被引频次：5[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://dspace.imech.ac.cn/handle/311007/86685
专题	非线性力学国家重点实验室
作者单位	1.Chinese Acad Sci, Inst Mech, State Key Lab Nonlinear Mech, Beijing 100190, Peoples R China; 2.Univ Chinese Acad Sci, Sch Engn Sci, Beijing 100049, Peoples R China
推荐引用方式 GB/T 7714	Chen C,Wang ZQ. A strain rate dependent thermo-elasto-plastic constitutive model for crystalline metallic materials[J]. SCIENTIFIC REPORTS,2021,11,1,:9.Rp_Au:Chen, Cen
APA	陈岑,&王自强.(2021).A strain rate dependent thermo-elasto-plastic constitutive model for crystalline metallic materials.SCIENTIFIC REPORTS,11(1),9.
MLA	陈岑,et al."A strain rate dependent thermo-elasto-plastic constitutive model for crystalline metallic materials".SCIENTIFIC REPORTS 11.1(2021):9.

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