摘要
针对实际地下工程中普遍存在的材料非线性以及半无限介质域的处理问题,给出了基于时间有关基本解的时域边界元法与非线性动力有限元法的耦合方法,应用该耦合方法计算了一马蹄形截面地下防护结构与围岩受爆炸冲击波作用下非线性相互作用的时间历程,并与线弹性情况进行了比较分析。结果表明:本文的方法具有较高精度,真实地再现了波在弹性层中传播以及反射的全过程。
A coupling method is presented that combines the time domain boundary element method and the nonlinear dynamics finite element method. It is used to solve the time path of the nonlinear interaction between the underground shielding structure and surrounding medium under blast loading. The results are compared with the linear elastic case, showing that this method has high precision and can satisfactorily duplicate the whole process of wave propagation and reflection in the elastic layers.
出处
《爆炸与冲击》
EI
CAS
CSCD
北大核心
2003年第5期385-390,共6页
Explosion and Shock Waves
基金
211工程重点建设项目
