Evaluation of Bi-Material Crack Using The Finite Block Method

10th International Conference and Workshop on Numerical Simulation of 3D Sheet Metal Forming Processes

Hinneh, P.^1 ; Wen, P.H.^1

School of Engineering and Materials Science, Queen Mary University of London, E1 4NS, United Kingdom^1

关键词: Bi-material;    Block methods;    Complex stress intensity factor;    Crack surfaces;    Equivalent finite element method;    Interface crack;    Material combination;    Meshfree;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/734/3/032055/pdf
DOI  :  10.1088/1742-6596/734/3/032055

来源: IOP

【 摘 要 】

The Finite Block Method has been employed in this paper to evaluate the stress intensity factor of a bi-material plate. The complex stress intensity factor components K1and K2determined by the Finite Block Method is compared with an equivalent Finite Element Method (ABAQUS) analysis. The paper demonstrates the accuracy of the Meshfree approach by the Finite Block Method without the arduous demand of meshing around the crack surface as seen on standard FEM crack analysis. This paper also describes the application of the polygonal singular core and the collocations points around the interface crack. A computational example for various E1/E2material combinations is presented.