Stress Intensity Factor for a Planar Interfacial Crack in Three Dimensional Bimaterials

Journal of Computational Science and Technology

Nao-Aki NODA²  Yasushi TAKASE³  Chunhui XU¹ 

[1] College of Science, China Agricultural University;Department of Mechanical Engineering, Kyushu Institute of Technology;Department of mechanical Engineering, Kyushu Institute of Technology

关键词: Elasticity;    Stress Intensity Factor;    Body Force Method;    Interface Crack;    Fracture Mechanics;    Composite Material;    Singular Integral Equation;   

DOI  :  10.1299/jcst.3.212

学科分类：地球科学(综合)

来源: Japan Academy

【 摘 要 】

References(23)In this paper, stress intensity factors for a three dimensional planar interfacial crack are considered on the idea of the body force method. The formulation leads to a system of singular integral equation, whose unknowns are three types of crack opening displacements. The unknown body force densities are approximated by the products of the fundamental density functions and power series; here, the fundamental density functions are chosen to express singular stress fields due to a two-dimensional interface crack exactly. The calculation shows that the present method gives rapidly converging numerical solutions. It is found that the stress intensity factors KI and KII are determined by bimaterials constant ε alone, independent of elastic modulus ratio and Poisson's ratio.

【 授权许可】

Unknown