摘要
研究了含半无限长裂纹压电材料在平面内电场和反平面荷载作用下的问题 ,得到了满足拉普拉斯方程、裂纹面边界条件的位移函数解和电势函数解及电弹场的基本解 ,并得到了应力、应变、电位移强度因子和能量释放率。研究结果表明 ,在裂尖 ,电场强度没有奇异性 ,而应变、应力、电位移具有奇异性。
The problem involved in a mode-Ⅲ semi-infinite crack in piezoelectric material under anti-plane mechanical shear loading and in-plane electrical loading is analyzed, a general solution of electromechanical field is obtained, which is satisfied both the Laplace equation and the boundary conditions of the crack surface and the stress, strain, electric displacement intensity factors are derived. It is shown that electric field is nonsingular in front of crack tip, while strain,stress, electric displacement have singularity.
出处
《中国安全科学学报》
CAS
CSCD
2003年第9期62-64,共3页
China Safety Science Journal
