单侧摩擦约束夹杂物的瞬态弹性波散射的时域边界元分析——反平面情况

TIME DOMAIN BOUNDARY ELEMENT ANALYSIS OF TRANSIENT SCATTERING OF ELASTIC WAVES FROM A UNILATERALLY FRICTIONALLY CONSTRAINED INCLUSION──ANTI-PLANE CASE

应用时域边界元法研究了瞬态SH波对单侧摩擦约束夹杂物的散射问题 .假设摩擦遵守库仑定理 ,当入射SH波足够强时界面会出现局部滑移 .发展了一种有效的迭代技术以确定边界上的未知区域 (滑移和粘着区 ) .算例计算了无限域中圆柱埋置夹杂物对瞬态SH波的散射问题 .

Developed a 2D time domain boundary element method (BEM) to solve the transient SH-wave scattering of a unilaterally frictionally constrained inclusion. Coulomb friction is assumed on the interface. The incident SH-wave is assumed strong enough to break friction so that localized slip takes place along the interface. In order to determine the unknown intervals (the slip and stick zones), an iterative technique is developed. As an example, the scattering of a circular cylinder embedded in an infinite solid is considered.