考虑单侧接触结构-介质动力相互作用的边界元分析

BE Analysis of the Dynamic Structure-Medium Interaction with Consideration of the Unilateral Contact Interface

应用时域边界元法研究了结构 -介质动力相互作用问题。假设摩擦遵守库仑定理。当入射波足够强时界面会出现局部滑移、分离。由于边界上的区域 (滑移、分离和粘着 )是未知的 ,所以本问题实际上是个复杂的边界非线性问题。为了确定未知区域 ,我们应用了一种有效的迭代技术。

Theis paper sutdies dynamic structure medium interaction with consideration of the unilateral frictional contact interface by time domain boundary element method.Coulomb friction law is assumed along the frictional interfaces. The incident wave is supposed strong enough to break friction so that localized slip or separation takes place along the interface. The present problem is indeed a nonlinear boundary value problem since the mixed boundary conditions involve unknown intervals(i.e.the slip, stick and separation zones).In order to determine the intervals,an iterative technique is developed.