摘要
提出了裂纹上下表面相对位移基本函数的概念，并将其引入到第一类及第二类边界积分方程中，建立了一种分析断裂力学三维裂纹体全复合型应力强度因子的混合边界积分方程──混合边界元法，对其中所涉及的基本原理及数值求解技术进行了详细的研究。最后通过若干算例考证了本方法的精度及可靠性。
The present paper proposed the concept of fundamental function of relativedisplacement of the crack's upper.and lower surfaces and introduced it into thefirst and second kind boundary integral equations.On the basis of this,a hybridboundary element method used in three-dimensional linear elastic fracture analysis was proposed and the basic principle and numerical methods concerned werepresented in detail. Finally the present method was examined through severalnumerical examples.
基金
浙江省自然科学基金
关键词
三维
裂纹
混合边界元法
Three-dimensional crack
Hybrid boundary element method
Fundamental function of relative displacement
Hypersingular integral
