摘要
在本文中,作者提出了一种可以考虑梁单元剪切变形和转动惯量影响的框架结构动力分析的动态有限元方法。文中阐述了框架结构有限单元各阶动约束模态函数的概念,并用它组成结构有限单元各阶动态形函数矩阵。文中还说明了使用递推方法计算结构的各阶动特性以及利用动态有限无法求解框架结构动态响应和动应力的方法。
A new dynamic finite element method for dynamic analysis of frame structures considering the effect of rotatory inertia and of shear deformation is presented in this paper. The concept of dynamic constraint mode functions for elements of a frame is introduced and it is used to form the dynamic shape function matrixes of each order for the finite elements of a frame. The natural characteristics of the structure are calculated with the recurrence method. The value of the frame structure's displacement and dynamic stress can be calculated by the use of the dynamic finite element method.
出处
《地震工程与工程振动》
CSCD
北大核心
1994年第2期102-113,共12页
Earthquake Engineering and Engineering Dynamics
