摘要
基于固体介质和液固两相饱和介质动力学方程,采用有限元方法模拟脉冲荷载作用下介质耦合对结构动力响应的影响,并采用黏弹性人工边界模拟地震波的远域能量逸散效应。计算结果表明:介质耦合对地震波的传播有一定的影响;黏弹性人工边界可以削弱地震波在固定边界处产生的反射现象,较固定边界计算结果更符合实际情况。
Based on solid and fluid-saturated porous solid dynamics equation,the impact of media coupling on structure dynamic response under pulse load was simulated using the finite element method.The visco-elastic artificial boundary was introduced to simulate seismic waves far field energy dissipation.Numerical simulation results show that the media coupling have a certain effect on seismic waves propagation,and the visco-elastic artificial boundary can eliminate reflection phenomenon of fixed boundary,which is more realistic comparing with fixed boundary model.
出处
《人民黄河》
CAS
北大核心
2012年第4期138-139,142,共3页
Yellow River
基金
国家自然科学基金资助项目(50879065)
华北水利水电学院高层次人才科研启动项目(001331)
关键词
固体介质
液固两相饱和介质
结构-地基动力相互作用
黏弹性人工边界
有限元分析
solid
fluid-saturated porous solid
structure-foundation dynamic interaction
visco-elastic artificial boundary
finite element analysis
