【作者】 钱桂安； 王茂廷； 王莲；

【Author】 QIAN GuiAn WANG MaoTing WANG Lian(Department of Mechanical Engineering, Liaoning University of Petroleum and Chemical Technology,Fushun 113001,China)

【机构】 辽宁石油化工大学机械工程学院；

【摘要】 通过算例,用大型有限元分析软件ANSYS对二维断裂参量进行计算和分析。采用1/4节点单元模拟裂纹尖端的奇异性,自由划分网格。结果与理论值进行比较,证明ANSYS解的合理性和断裂参量之间的相互关联性。为断裂参量的计算提供准确而又方便的方法更多还原

【Abstract】 Mostly, the three fracture parameters were calculated by finite element method. Both two-dimension specimen and three-dimension specimen were studied by using the software of ANSYS. Quadratic element was applied to simulate singularity around the crack tip, and the model was meshed freely. It proved that the results of ANSYS are approximate to that of theoretical estimation formula and there are some internal connections among the three fracture parameters .It is a useful tool in calculation of fracture parameters, and provides an accurate and convenient method in fracture design.更多还原