Fatigue cracks are one of the important factors causing fracture and failure of engineering structures.At present,the commercial software for fatigue crack propagation finite element simula-tion includes ANSYS,ABAQUS,FRANC3D,ZENCRACK,etc.,which provide strong support for the study of fatigue crack propagation process.The current finite element simulation methods for fatigue crack propagation are reviewed in this paper.The definition of fatigue crack and the necessity of studying fatigue crack propagation behavior are clarified.Three finite element methods for simulating fatigue crack propagation are introduced:Extended Finite Element Method(XFEM),Cohesive Zone Model(CZM)and Virtual Crack Closure Technique(VCCT).The basic theories and core ideas of the three methods were summarized,and the application as well as development of the three methods were classified and summarized.Finally,the three finite element methods are analyzed,the advantages and limitations of each method are pointed out,and suggestions are given for the future improvement of the finite element simulation technology for fatigue crack propagation.
关键词
疲劳裂纹扩展/扩展有限元法/内聚力模型/虚拟裂纹闭合技术/数值模拟
Key words
fatigue crack growth/extended finite element method/cohesive zone model/virtual crack closure technique/numerical simulation
维普
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