南京航空航天大学学报（英文版）2024，Vol.41Issue(5)：564-574,11.DOI:10.16356/j.1005-1120.2024.05.002
用于塑性断裂过程分析的动态相场法
Dynamic Phase Field Description on Ductile Fracture Process
摘要
Abstract
In comparison to discrete descriptions of fracture process,the recently proposed phase field methodology averts the numerical tracking strategy of discontinuities in solids,which enables the numerical implement simplification.An implicit finite element formulation based on the diffuse phase field is extended for stable and efficient analysis of complex dynamic fracture process in ductile solids.This exhibited formulation is shown to capture entire range of the characteristics of ductile material presenting J2-plasticity,embracing plasticization,cracks initiation,propagation,branching and merging while fulfilling the basic principle of thermodynamics.Herein,we implement a staggered time integration scheme of the dynamic elasto-plastic phase field method into the commercial finite element code.The numerical performance of the present advanced phase field model has been examined through several classic dynamic fracture benchmarks,and in all cases simulation results are in good agreement with the associated experimental data and other numerical results in previous literature.关键词
隐式动力学分析/塑性断裂/弹塑性列式/相场法/复杂裂纹模式Key words
implicit dynamic analysis/ductile fracture/elasto-plastic formulation/phase field/complex crack mode分类
数理科学引用本文复制引用
马学仕,王刚耀,王佳..用于塑性断裂过程分析的动态相场法[J].南京航空航天大学学报（英文版）,2024,41(5):564-574,11.基金项目
This work was supported by the Na-tional Natural Science Foundation of China(No.12302176). （No.12302176）
