Growth of thermoplastic shear band

doi:10.1016/j.jmrt.2024.10.148

IMECH-IR > 非线性力学国家重点实验室

	Growth of thermoplastic shear band
	Sheng DL(盛冬林)1,2; Chen, Yan1,2 ; Zhou, FengHua 3; Dai LH(戴兰宏)1,2
通讯作者	Dai, Lan-Hong(lhdai@lnm.imech.ac.cn)
发表期刊	JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T (IF:3.327[JCR-2018])
	2024-11-01
卷号	33 页码:4783-4795
ISSN	2238-7854
摘要	Shear localization is a fundamental and widely observed non-equilibrium phenomenon in metallic materials subjected to impulsive loadings. Despite extensive research over several decades, the evolution of shear bands still remains poorly understood. In this study, we propose a two-stage model to describe the evolution of thermoplastic shear band, where the effects of strain hardening, strain-rate hardening, and thermal softening are involved. Our analysis reveals that the growth of thermoplastic shear band is derived by the competition between momentum diffusion and thermal diffusion processes, which is controlled by the solid-state equivalent of the Prandtl number. By incorporating these factors into our model, we find that the presence of hardening effect retards the evolution of shear bands, resulting in a wider shear band and increased dissipation of energy. Theoretical calculation results of shear bandwidth, shear band strain, propagation velocity, process zone geometry and dimensions, critical dissipation energy, shear band toughness, and shear band spacing are well consistent with available experimental data. Additionally, we explore the potential transition to turbulence controlled by Reynolds number within shear bands and investigate the influence of the Taylor-Quinney coefficient on the evolution of shear bands. These findings are expected to offer valuable insights into the mechanism of shear band evolution.
关键词	Thermoplastic shear bands Strain (rate) hardening Thermal softening Momentum diffusion Thermal diffusion
DOI	10.1016/j.jmrt.2024.10.148
收录类别	SCI ; EI
语种	英语
WOS记录号	WOS:001339712000001
关键词[WOS]	TAYLOR-QUINNEY COEFFICIENT ; MICROSTRUCTURAL EVOLUTION ; DYNAMIC COMPRESSION ; LOCALIZATION ; STRAIN ; ALLOY ; STEEL
WOS研究方向	Materials Science ; Metallurgy & Metallurgical Engineering
WOS类目	Materials Science, Multidisciplinary ; Metallurgy & Metallurgical Engineering
资助项目	NSFC[12432019,12322214,12102433] ; NSFC[11972346] ; NSFC[2021-2-3] ; NSFC[11988102] ; NSFC[KFJJ23-03M]
项目资助者	NSFC
论文分区	一类
力学所作者排名	1
RpAuthor	戴兰宏
引用统计	被引频次：1[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/311007/97122
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 101408, Peoples R China; 3.Ningbo Univ, Fac Mech Engn & Mech, Ningbo 315211, Peoples R China
推荐引用方式 GB/T 7714	Sheng DL,Chen, Yan,Zhou, FengHua,et al. Growth of thermoplastic shear band[J]. JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T,2024,33:4783-4795.
APA	盛冬林,Chen, Yan,Zhou, FengHua,&戴兰宏.(2024).Growth of thermoplastic shear band.JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T,33,4783-4795.
MLA	盛冬林,et al."Growth of thermoplastic shear band".JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T 33(2024):4783-4795.

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