SH波与功能梯度材料静止裂纹的相互作用

INTERACTION BETWEEN SH-WAVES AND STATIC CRACK IN FUNCTIONALLY GRATED MATERIALS

利用功能梯度材料剪切模量和密度的指数模型 ,利用积分变换 积分方程方法 ,对无限大体SH波作用下的功能梯度材料裂纹进行了求解 .通过理论分析给出了裂纹尖端的动应力强度因子 ,通过数值计算给出了材料的剪切模量梯度、频率对动应力强度因子的影响 .

Assumed the materials' shear modulus and density are both exponential functions of the coordinate, and the integral transforms and dual integral equation methods are used to study, a finite crack in FGMs subjected to SH-waves loads. By theoretical analysis, the crack tip stress intensity factors are obtained. By numerical method, the effects of the graded parameter and frequency of SH-wave on dynamic stress intensity factor are discussed.