Development of X-FEM methodology and study on mixed-mode crack propagation

作     者：Zhuo Zhuang Bin-Bin Cheng 

作者机构：School of Aerospace Tsinghua University 100084 Beijing China 

出 版 物：《Acta Mechanica Sinica》 (力学学报（英文版）)

年 卷 期：2011年第27卷第3期

页      面：406-415页

核心收录：

学科分类：08[工学] 080203[工学-机械设计及理论] 0802[工学-机械工程] 080102[工学-固体力学] 0801[工学-力学（可授工学、理学学位）] 

主　　题：X FEM   Mixed mode fracture . Bi material Sub interfacial crack 

摘      要：The extended finite element method（X-FEM） is a novel numerical methodology with a great potential for using in multi-scale computation and multi-phase coupling problems. The algorithm is discussed and a program is developed based on X-FEM for simulating mixed-mode crack propagation. The maximum circumferential stress criterion and interaction integral are deduced. Some numerical results are compared with the experimental data to prove the capability and efficiency of the algorithm and the program. Numerical analyses of sub-interfacial crack growth in bi-materials give a clear description of the effiect on fracture made by interface and loading condition.