摘要
本文首先利用Ｆｏｕｒｉｅｒ和Ｌａｐｌａｃｅ变换并结合Ｃａｇｎｉａｒｄ－ｄｅＨｏｏｐ反演方法求解了单个界面螺位错的瞬态运动问题，然后以单个位错由静止匀速运动的解作为基本解建立奇异积分方程求解了运动集中载荷作用下界面裂纹的反平面非对称自相似扩展。
The paper deals with the transient motion of an interface screw dislocation by the use of Fourier and Laplace transforms and Cagniard-de Hoop inverse technique. With the solution of a dislocation moving uniformly from rest being the fundamental solution, a singular integral equation is established to solve the non-symmetric anti-plane self-similar propagation of an interface crack subjected to moving concentrated loads. Furthermore, the self-similar propagation of an interface crack under the loading of x n -type is studied with the help of the above solution.
出处
《宇航学报》
EI
CSCD
北大核心
1996年第3期31-39,共9页
Journal of Astronautics
关键词
断裂动力学界面位错界面裂纹动应力强度因子
Dynamic fracture mechanics Interface dislocation Interface crack Dynamic stress intensity factor
