BOUNDARY INTEGRATE EQUATION METHOD FOR SEMI-PERMEABLE VERTICAL PLANAR CRACKS IN 3D PIEZOELECTRIC MEDIA
In this paper, the boundary integral equation method is developed to study a vertical planar crack under the electrically semi-permeable boundary condition. The crack face is parallel to the poling direction and normal to the plane of isotropy in threedimensional (3D) transversely isotropic piezoelectric media. The result shows that the singularity order is still the ordinary r-1/2at the crack tip. The mode I stress intensity factor is related only to the displacement discontinuity or the mechanical loading in the normal direction of the crack plane, whilst the other field intensity factors are coupled together by other extended displacement discontinuities. When the crack is extended infinitely in the y-direction, the problem is reduced to a two-dimensional (2D) one, and the corresponding coupling behavior is simplified.
Piezoelectric medium Boundary integrate equation method Vertical crack Field intensity factor
Cui-yingFAN Zheng-hua GUO Ming-hao ZHAO Rong-li ZHANG Ernian PAN
The School of Mechanical Engineering, Zhengzhou University, Zhengzhou, Henan, 450001, China
国际会议
深圳
英文
344-348
2011-12-09（万方平台首次上网日期，不代表论文的发表时间）