A CRACK IN AN INFINITE PLATE OF FGMS SUBJECTED TO AN ANTI-PLANE SHEAR IMPACT LOADING
The problem of a plane crack in an infinite plate of functionally graded materials (FGMs) subjected to an anti-plane shear impact loading is considered. The assumed property variations is exponential of shear modulus and mass density. The Poisson’s ratio is assumed to be constant. The mixed boundary value problem is reduced to a pair dual integral equations through the use of Laplace and Fourier integral transform. In solving the dual integral equations, the crack surface displacement in the Laplace transform domain is expanded in a series using Jacobi’s polynomials. The influence of the characteristic length on the crack-tip stress is studied by making using of numerical inversion of Laplace transform technique. The numerical results show that the crack-tip stress fields does not retains the stress singularity. The crack-tip stress tends to increase with time at first and then decreases in amplitude and the peak values of stress decreases with increasing the characteristic length.
Xianshun Bi Jianxun Zhang Xuefeng Cai
Department of Civil Engineering, Fujian University of Technology, Fuzhou, 350007, P. R. China
国际会议
第九届工程结构完整性国际会议(The Ninth International Conference on Engineering Structural Integrity Assessment)
北京
英文
2007-10-15（万方平台首次上网日期，不代表论文的发表时间）