摘要
提出了刚体-界面元、有限元与半无限元相耦合的算法,研究了挡水结构系统的动力特性及在地震激励下的动力响应。对于结构的主要部分用刚体-界面元离散,对结构的迎水面部分用有限元离散,在两种单元的交接面上设置了过渡单元,采用有限元和半无限元相结合模拟了水体的宽广性。文中导出了相关公式,编制了相应的计算程序,数值算例结果与有关文献比较,证实了提供方法和编制程序的正确性,并说明该方法具有简便,工作量少和计算精度高的优点。
A coupling method of Rigid-Body Interface Stress Element(RISE)with Finite Element (FE)is proposed.The dynamic property and response of water-retaining structural system is studied.The structure is discreted by RISE and FE,and between RISE and FE the transition element is inserted.The water-range is discreted by FE and semi-infinite element.Numerical examples show that the method is simple and efficient。
出处
《河海大学学报(自然科学版)》
CAS
CSCD
1994年第6期8-15,共8页
Journal of Hohai University(Natural Sciences)
关键词
挡水结构
动力分析
有限元耦合法
刚体-界面元
Rigid-body interface stress element Finite element Semi-infinite element Structural system Dynamic property Earthquake excitation Dynamic response