【摘要】 将波函数展开方法与奇异积分方程方法相结合,研究了无限大压电体中多个弧形裂纹对入射SH波的散射问题。通过引入广义位错密度函数,所考虑的混合边界值问题被化为一组第一类Cauchy型奇异积分方程,最后化为代数方程组进行数值求解。作为算例,给出了一个和两个弧形裂纹动应力强度因子随入射频率变化的关系曲线。更多还原

【Abstract】 The scattering problem of SH wave by arcshaped cracks in an infinite piezoelectric material is studied in this paper The mixed boundary condition is converted to a set of Cauchy singular integral equations of the first kind by introducing general dislocation density functionsAs examples, numerical results of one single and double cracks are plotted to show the effects of the incident angles and the incident frequency on the dynamic stress intensity factor更多还原