弹性地基板的动态刚度矩阵迭代法

Iteration of Changeable Stiffness Matrix for Elastic Foundation Plates

本文针对目前计算弹性地基板采用Winkler地基模型计算中存在的问题,即不论结构及加载形式如何,均假设变形后板与地基仍存在完全接触的不足,提出分析此类结构的动态刚度矩阵迭代法。在IBM微机上实现的数值算例结果表明,本文方法更真实地反映了板与地基间的相互作用。

In existing calculus of structures supported on elastic foundation taking from Winkler model,it is assumed that the deformed plate is always fully in contact with the foundation without consideration of loading form and structural type. In this paper, a method using iteration of changeable stiffness matrix is advanced to remedy the insufficiency of the assumption. Results from numerical examples calculated on microcomputer show that the method can reflect far more accurately the effect of the foundation on structure.