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
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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 |
DOI | 10.1016/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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