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A thermo-elastic-plastic phase-field model for simulating the evolution and transition of adiabatic shear band. Part II. Dynamic collapse of thick-walled cylinder

文献类型：期刊论文

作者Wang T3; Liu ZL3; Cui YN3; Ye X(叶璇)2; Liu XM(刘小明)2; Tian R1; Zhuang Z3
刊名ENGINEERING FRACTURE MECHANICS
出版日期2020-05-15
卷号231页码:14
ISSN号0013-7944
关键词Adiabatic shear band Phase-field Thick-walled cylinder Self-organizing behavior Defect effect
DOI10.1016/j.engfracmech.2020.107027
通讯作者Liu, Z. L.(liuzhanli@tsinghua.edu.cn) ; Zhuang, Z.(zhuangz@tsinghua.edu.cn)
英文摘要In Part I, a thermo-elastic-plastic phase-field model is established for describing the adiabatic shear band (ASB) in metal materials. In this Part II, the developed model is used to simulate the classical thick-walled cylinder (TWC) experiment to investigate the self-organizing behavior of multiple ASBs. For the first time, the formation process of self-organized ASBs in the TWC experiment is reproduced by the phase-field method and the underlying physical mechanism is analyzed in detail. The simulation results show that the number and spacing of ASBs are related to loading rate and material properties. A higher loading rate leads to more intensive ASBs. For typical engineering materials such as 304L stainless steel (Ss304L) and titanium alloy (Ti6Al4V), the contribution of thermal softening to the formation of ASBs is far less than that of damage softening. However, thermal softening is very important to induce initial ASBs. In addition, we also find that defects, especially large ones, play a dominant role in the initiation and evolution of ASBs, leading to complex patterns of ASBs in the TWC experiments.
分类号二类/Q1
WOS关键词MECHANISM CONSTITUTIVE MODEL ; SELF-ORGANIZATION ; BRITTLE SOLIDS ; DAMAGE MODEL ; FAILURE ; FRACTURE ; LOCALIZATION ; DEFORMATION ; COMPRESSION ; FORMULATION
资助项目Science Challenge Project[TZ2018002] ; National Natural Science Foundation of China[11532008] ; National Natural Science Foundation of China[11972208] ; China Postdoctoral Science Foundation[2019M650699]
WOS研究方向Mechanics
语种英语
WOS记录号WOS:000576755900001
资助机构Science Challenge Project ; National Natural Science Foundation of China ; China Postdoctoral Science Foundation
其他责任者Liu, Z. L. ; Zhuang, Z.
源URL[http://dspace.imech.ac.cn/handle/311007/85327]  
专题力学研究所_非线性力学国家重点实验室
作者单位1.Inst Appl Phys & Computat Math, Software Ctr High Performance Numer Simulat, Beijing 100088, Peoples R China
2.Chinese Acad Sci, Inst Mech, LNM, Beijing 100190, Peoples R China;
3.Tsinghua Univ, Sch Aerosp Engn, Appl Mech Lab, Beijing 100084, Peoples R China;
推荐引用方式
GB/T 7714		 Wang T,Liu ZL,Cui YN,et al. A thermo-elastic-plastic phase-field model for simulating the evolution and transition of adiabatic shear band. Part II. Dynamic collapse of thick-walled cylinder[J]. ENGINEERING FRACTURE MECHANICS,2020,231:14.
APA Wang T.,Liu ZL.,Cui YN.,叶璇.,刘小明.,...&Zhuang Z.(2020).A thermo-elastic-plastic phase-field model for simulating the evolution and transition of adiabatic shear band. Part II. Dynamic collapse of thick-walled cylinder.ENGINEERING FRACTURE MECHANICS,231,14.
MLA Wang T,et al."A thermo-elastic-plastic phase-field model for simulating the evolution and transition of adiabatic shear band. Part II. Dynamic collapse of thick-walled cylinder".ENGINEERING FRACTURE MECHANICS 231(2020):14.

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来源：力学研究所

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