Finite element simulations of crack propagation in functionally graded materials under flexural loading
摘要：
Cracks in stepped and continuously graded material specimens under flexural loading were investigated via finite element analysis. Calculation of mechanical energy release rates and propagation angles with crack-opening displacement correlation and the local symmetry ( K II = 0) criterion, respectively, provided results most efficiently and accurately, as compared with compliance and J-integral approaches and other deflection criteria. A routine was developed for automatic crack extension and remeshing, enabling simulation of incremental crack propagation. Effects of gradient profile and crack geometry on crack-tip stresses and crack propagation path are examined, and implications of these for optimal design of graded components against failure by fast fracture are discussed.
展开
关键词：
Theoretical or Mathematical/ cracks finite element analysis functionally graded materials/ finite element simulations crack propagation functionally graded materials flexural loading mechanical energy release rates propagation angles crack-opening displacement correlation local symmetry criterion J-integral approach deflection criteria automatic crack extension remeshing incremental crack propagation gradient profile crack geometry crack-tip stresses crack propagation path optimal design graded components failure fast fracture/ A8140N Fatigue, embrittlement, and fracture A6220M Fatigue, brittleness, fracture, and cracks
DOI：
10.1016/j.engfracmech.2005.04.001
被引量：
年份：
2005
相似文献
参考文献
引证文献
引用走势
站内活动
辅助模式
引用
文献可以批量引用啦~
欢迎点我试用！
