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

Abstract 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 meta...

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Autores principales:	Cen Chen, TzuChiang Wang
Formato:	article
Lenguaje:	EN
Publicado:	Nature Portfolio 2021
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/eb703e3d04d445ddb0efe8c270fea579
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spelling	oai:doaj.org-article:eb703e3d04d445ddb0efe8c270fea5792021-12-02T17:32:59ZA strain rate dependent thermo-elasto-plastic constitutive model for crystalline metallic materials10.1038/s41598-021-88333-12045-2322https://doaj.org/article/eb703e3d04d445ddb0efe8c270fea5792021-04-01T00:00:00Zhttps://doi.org/10.1038/s41598-021-88333-1https://doaj.org/toc/2045-2322Abstract 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.Cen ChenTzuChiang WangNature PortfolioarticleMedicineRScienceQENScientific Reports, Vol 11, Iss 1, Pp 1-9 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Cen Chen TzuChiang Wang A strain rate dependent thermo-elasto-plastic constitutive model for crystalline metallic materials
description	Abstract 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.
format	article
author	Cen Chen TzuChiang Wang
author_facet	Cen Chen TzuChiang Wang
author_sort	Cen Chen
title	A strain rate dependent thermo-elasto-plastic constitutive model for crystalline metallic materials
title_short	A strain rate dependent thermo-elasto-plastic constitutive model for crystalline metallic materials
title_full	A strain rate dependent thermo-elasto-plastic constitutive model for crystalline metallic materials
title_fullStr	A strain rate dependent thermo-elasto-plastic constitutive model for crystalline metallic materials
title_full_unstemmed	A strain rate dependent thermo-elasto-plastic constitutive model for crystalline metallic materials
title_sort	strain rate dependent thermo-elasto-plastic constitutive model for crystalline metallic materials
publisher	Nature Portfolio
publishDate	2021
url	https://doaj.org/article/eb703e3d04d445ddb0efe8c270fea579
work_keys_str_mv	AT cenchen astrainratedependentthermoelastoplasticconstitutivemodelforcrystallinemetallicmaterials AT tzuchiangwang astrainratedependentthermoelastoplasticconstitutivemodelforcrystallinemetallicmaterials AT cenchen strainratedependentthermoelastoplasticconstitutivemodelforcrystallinemetallicmaterials AT tzuchiangwang strainratedependentthermoelastoplasticconstitutivemodelforcrystallinemetallicmaterials
_version_	1718380157676290048

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

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