摘要
着重讨论了裂纹扩展过程模拟中的有限元分析技术，提出一种高精度和高效率有限元计算的网格动态重新划分策略，利用能量释放率准则和节点力释放的方法，模拟裂纹的传播过程。研究指出了有限元模拟技术对裂纹传播问题的有效性及其实用价值。
This work develops a numerical technique to model the crack growth process in homogeneous or inhomogeneous solids.A new remeshing strategy of FE mesh was presented for improving the calculation accuracy and efficiency.The energy release rate criteria and the node release method were used to simulate the growth process of a crack located between elements.The detailed procedures were demonstrated by the interfacial crack growth problem in bimaterials.It is shown that this technique can be applied to predict crack path in multiphase solids.
出处
《铁道学报》
EI
CAS
CSCD
北大核心
1997年第5期116-120,共5页
Journal of the China Railway Society
基金
国家自然科学基金
关键词
裂纹扩展
网络划分
有限元法
数值模拟
crack growth
remeshing
finite element method
numerical modeling
