【摘要】 研究无限大功能梯度压电/压磁复合材料中裂纹对SH波的散射问题。为了便于分析,假设材料性质沿着裂纹的法线方向是指数变化。利用Fourier余弦变化,将问题转化为对偶积分方程的求解,此对偶积分方程采用Copson方法求解。然后求得应力强度因子、电位移强度因子、磁通量强度因子的解析表达式,最后数值算例给出了材料参数、入射角及波数对标准动应力强度因子的影响。更多还原

【Abstract】 SH wave scattering on the cracks in on infinite functionally graded piezoelectric/piezomagnetic composite materials is investigated. To simplify analysis, it is assumed that the material properties vary exponentially along the normal of the crack. Fourier cosine transform is chosen to put the problem into a pair of dual integral equations. The numerical results demonstrate the effect of material parameters and the wave scattering angle upon the normalized dynamic stress intensity factor.更多还原