A thermo-elastic-plastic phase-field model for simulating the evolution and transition of adiabatic shear band. Part I. Theory and model calibration
Wang T1; Liu ZL1; Cui YN1; Ye X(叶璇)2; Liu XM(刘小明)2; Tian R3; Zhuang Z1
刊名ENGINEERING FRACTURE MECHANICS
2020-06-01
卷号232页码:12
关键词Adiabatic shear band Phase-field model Fracture Parameter calibration Multi-field coupling
ISSN号0013-7944
DOI10.1016/j.engfracmech.2020.107028
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
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关键词MECHANISM CONSTITUTIVE MODEL ; CRACK-PROPAGATION ; DYNAMIC FAILURE ; DAMAGE MODEL ; STRESS TRIAXIALITY ; BRITTLE-FRACTURE ; FORMULATION ; LAW ; COMPRESSION ; DEPENDENCE
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.
内容类型期刊论文
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.Tsinghua Univ, Sch Aerosp Engn, Appl Mech Lab, Beijing 100084, Peoples R China;
2.Chinese Acad Sci, Inst Mech, LNM, Beijing 100190, Peoples R China;
3.Inst Appl Phys & Computat Math, Software Ctr High Performance Numer Simulat, Beijing 100088, 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.,Ye X.,Liu XM.,...&Zhuang Z.(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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