摘要
研究多个纵向环形界面裂纹的P波散射问题 .以裂纹面的位错密度函数为未知量 ,利用Fourier积分变换 ,将问题归结为第二类奇异积分方程 ,然后通过数值求解 ,获得裂纹尖端的动应力强度因子 .
An investigation for the scattering of elastic waves by interface cylindrical cracks subjected to P wave is presented. By using Fourier transform and introducing the dislocation density functions as unknown variables, the problem was reduced to a set of singular integral equations of the second kind which were solved numerically to calculate the dynamic stress intensity factors. Numerical results show that material parameters and geometry criteria have both important influences on the resonance peak.
出处
《固体力学学报》
CAS
CSCD
北大核心
2000年第1期71-78,共8页
Chinese Journal of Solid Mechanics
基金
国家自然科学基金!(项目编号:59575025)
关键词
弹性波散射
纵向环形界面裂纹
动应力强度因子
elastic wave scattering, interface cylindrical crack, singular integral equation, dynamic stress intensity factor
