应用数学和力学2025，Vol.46Issue(7)：893-903,11.DOI:10.21656/1000-0887.450179
功能梯度材料疲劳断裂的相场模型研究
Research on Phase-Field Model for Fatigue Fracture of Functionally Graded Materials
摘要
Abstract
The complex parameters of functionally graded materials(FGMs)lead to the complicated stress fields,which brings some difficulties for numerical analysis of their fatigue fracture.The complicated fracture problems such as crack propagation can be simulated with the phase-field model without additional fracture cri-teria.The hybrid phase-field model for FGMs was extended to fatigue fracture problems through introduction of the fatigue function to degrade the fracture energy.The phase-field model for fatigue fracture of FGMs was de-veloped and the driving force for crack propagation was analyzed.The fatigue fracture mechanism that the crack propagation is controlled by the strain energy history,the critical energy release rate and the fatigue degradation function,was revealed.This work offers some guidance for the design of FGM structures.关键词
功能梯度材料/相场模型/疲劳/断裂Key words
functionally graded material/phase-field model/fatigue/fracture分类
数理科学引用本文复制引用
陈荣富,邵玉龙,任占威..功能梯度材料疲劳断裂的相场模型研究[J].应用数学和力学,2025,46(7):893-903,11.基金项目
河北省自然科学基金(A2022203045) （A2022203045）
