摘要
本文首先将半无限弹性层状体系在空间上离散化,划分为若干个有限单元和无限单元的耦合,并推导了无限元的计算公式;进而又将动力问题在时间上加以离散,提出了逐步求解弹性系统运动方程的算法;最后利用编制的程序对半波正弦荷载作用下层状体系的动力响应进行了计算和分析.结果表明,文中所提出的方法计算精度高,稳定性好,运行速度快,是一种有效的计算弹性层状体系动力响应分析的实用方法.
This paper deals with the computation of the dynamic response of elastic multi-layered system. Firstly, the semi-infinite multilayered system is by discretization dividing into some finite and infinite elements. Formula concerning the 5-nodes infinite element are then developed. Secondly, the transient dynamic problem is also by discrete method to be separated in the time domain and calculated with recurrence method. Arid finally, dynamic response of the multilayered system under the action of half-sine load is computed and analyzed using the program developed by the author. It is shown that the program is of high accuracy, high stability, and high speed so that it can be used as an efficient and practical tool to compute the dynamic response of the elastic multi-layered system.
出处
《土木工程学报》
EI
CSCD
北大核心
1995年第3期9-16,共8页
China Civil Engineering Journal
