郑州大学学报（工学版）2011，Vol.32Issue(4)：26-29,51,5.
基于基本解的杂交有限元法计算应力强度因子
Calculation of Stress Intensity Factor by Hybrid Finite Element Method Based on Fundamental Solutions Kernels
郑冠雨 1王辉2
作者信息
- 1. 重庆大学土木工程学院,重庆400030
- 2. 河南工业大学土木建筑学院,河南郑州450052
- 折叠
摘要
Abstract
Stress intensity factor is usually used to represent the stress singularity at tips of cracks embedded in engineering structures. With the displacement extrapolation method, the element-boundary integration-based hybrid finite element model is developed in the paper to determine the stress intensity factor for I-type cracks. In the hybrid formulation, the combination of fundamental solutions is used to approximate the element interior displacement and stress fields, while the conventional shape functions are employed to construct the element frame displacement fields. These two independent fields are linked by the hybrid functional and the element domain integral in the functional is converted to element boundary integral. Numerical examples show that the proposed hybrid method has good accuracy and can be used to analyze the crack problems.关键词
断裂力学/应力强度因子/基本解/杂交有限元法Key words
fracture mechanics/stress intensity factor/fundamental solution/hybrid finite element method分类
数理科学引用本文复制引用
郑冠雨,王辉..基于基本解的杂交有限元法计算应力强度因子[J].郑州大学学报（工学版）,2011,32(4):26-29,51,5.
