离散元-边界元动力耦合模型

摘要

本文提出了一种二维变形体离散元与时域边界元的耦合模型，这一模型可以将非连续体的模拟与无限域的模拟统一在一个模型中，可用于在地震波动输入条件下，考虑辐射阻尼的岩体边坡或地下结构等的动力稳定和变形分析，拓宽了离散元动力分析的领域.算例分析表明本耦合分析模型具有较高的精度.%A 2-D dynamic model coupling the deformation block distinct element method with boundary element method in time domain is established. The model simulates the static and dynamic responses of discontinuous rock and the effects of infinite domain simultaneously. It can be used to analyze the static and dynamic stability, deformation of rocky slopes as well as the underground structures, especially when wave propagation input of earthquake and radiation damping must be taken into acciunt. The results of bench mark problems show shows that the precision of this method is high.