Crack propagation analysis using the coupling algorithm of improved EFGM and FEM
This paper develops a new concurrent simulation technique to couple the improved element-free Galerkin IEFG) method and the finite element (FE) method for crack propagation problems. In the sub-domain around a crack tip and along the direction of the crack propagation, applied is the improved element-free Galerkin method using an improved moving least-squares (IMLS) approximation, but in the other sub-domains applied is the finite element method. The IMLS approximation has greater computational efficiency and precision than the existing moving least-squares (MLS) approximation, and does not lead to an ill-conditioned system of equations that can be solved without having to derive the inverse matrix. The coupling of the IEFG method and the FE method not only treats essential boundary conditions easily, but also improves computation efficiency and the method has the advantages of excellent convergence rate, high accuracy and efficiency. Numerical examples are presented to illustrate the performance and potential of this method.
Y.F.Bian P.X.He H.B.Chen
School of Civil and Hydraulic Engineering,Hefei University of Technology,Hefei 230009,China CAS Key Laboratory of Mechanical Behavior and Design of Materials,Department of Modern Mechanics,Uni
国际会议
南京
英文
1
2009-10-18（万方平台首次上网日期，不代表论文的发表时间）