摘要
以当前无应力构形作为参照构形建立结构动力方程,能自动考虑轴力和弯矩之间的耦合作用,不需引入几何刚度矩阵。然后给出迭代格式,并讨论迭代的收敛性。最后对一个 8 层框架结构进行动力分析,结果表明结构的动力响应峰值比不考虑轴力和弯矩之间的耦合作用的计算结果有合理的增加,但频率响应基本没有变化。
The equations of motion are established referring to the current-unstressed configuration, by which the coupling between axial forces and bending moments is naturally considered without introducing geometric stiffness matrix. The iteration formulation is then given and its convergence is also discussed. The dynamic analysis of an 8-story frame is conducted. It is shown that, in comparison with the calculated results from the conventional method, the peak values of dynamic response are reasonably increasing, but the frequency responses remain nearly unchanged.
出处
《岩石力学与工程学报》
EI
CAS
CSCD
北大核心
2004年第21期3669-3672,共4页
Chinese Journal of Rock Mechanics and Engineering
基金
国家重点基础研究发展规划(973)项目(2002CB412709)资助课题。
关键词
结构力学
无应力构形
动力响应
频率响应
Couplings
Frequency response
Geotechnical engineering
Stiffness matrix
