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A thermo-elastic-plastic phase-field model for simulating the evolution and transition of adiabatic shear band. Part I. Theory and model calibration

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, R.1; Zhuang, Z.3; Liu XM(刘小明); Ye X(叶璇)
刊名ENGINEERING FRACTURE MECHANICS
出版日期2020-06-01
卷号232页码:12
ISSN号0013-7944
关键词Adiabatic shear band Phase-field model Fracture Parameter calibration Multi-field coupling
DOI10.1016/j.engfracmech.2020.107028
通讯作者Liu, Z. L.(liuzhanli@tsinghua.edu.cn) ; Zhuang, Z.(zhuangz@tsinghua.edu.cn)
英文摘要Adiabatic shear band (ASB) is an important failure mode of solid materials, especially for metal materials under high strain rate loading. In this study, a thermo-elastic-plastic phase-field model, which considers both damage softening and thermal softening, is established to simulate the formation of multiple ASBs and the transition from ASB to the fracture. How to select and calibrate the material parameters in the phase-field model is seldom clearly discussed in the current phase-field model when dealing with ASB. In this paper, the damage parameters in the phase-field method are calibrated using data from pure shear specimens, taking into account both the overall response of the structure and the local response in the ASB. As an application, the calibrated model is used to numerically study the evolution of the ASB of the hat specimen and the process of its transition to the fracture. The simulation results successfully explain the typical phenomena such as transient "hot spots" and double softening in the experiment. The numerical model we developed provides a reliable quantitative description for the evolution and width calculation of ASBs and lays a foundation for the further study of ASB.
分类号二类/Q1
WOS关键词MECHANISM CONSTITUTIVE MODEL ; CRACK-PROPAGATION ; DYNAMIC FAILURE ; DAMAGE MODEL ; STRESS TRIAXIALITY ; BRITTLE-FRACTURE ; FORMULATION ; LAW ; COMPRESSION ; DEPENDENCE
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:000536482400003
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/311007/82069]  
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 I. Theory and model calibration[J]. ENGINEERING FRACTURE MECHANICS,2020,232:12.
APA Wang, T.,Liu, ZL.,Cui, YN.,叶璇.,刘小明.,...&Ye X.(2020).A thermo-elastic-plastic phase-field model for simulating the evolution and transition of adiabatic shear band. Part I. Theory and model calibration.ENGINEERING FRACTURE MECHANICS,232,12.
MLA Wang, T,et al."A thermo-elastic-plastic phase-field model for simulating the evolution and transition of adiabatic shear band. Part I. Theory and model calibration".ENGINEERING FRACTURE MECHANICS 232(2020):12.

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来源：力学研究所

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