波在非均匀损伤介质中的传播

Wave Propagation in a Continuous Transitional Inhomogeneous Damaged Zone

对弹性波在非均匀损伤介质中的传播理论进行了研究。利用走时变换,建立了非均匀损伤介质中波动方程的一般形式;通过非均匀损伤区两端界面处力的平衡条件和位移相容条件对方程式进行求解。对带状渐增和渐减的非均匀损伤介质中波的传播进行了实例计算分析,讨论了弹性波在非均匀损伤介质中传播的一般性质。

The theory of elastic wave propagation in a continuous transitional inhomogeneous damaged zone between two different homogeneous damaged materials is studied. Based on delay-time transform, the general equations of elastic wave propagation are established, and the equations are solved by using equilibrium condition of force and compatibility condition in two borders of inhomogeneous damaged zone. The basic properties of elastic wave propagation in inhomogeneous damaged materials are discussed by examples.