随机参数结构的建模技术

A Method of Modeling with Structural Stochastic Parameters

在确定性参数建模的基础上，利用摄动有限元方法与概率论方法，提出了根据结构模态实验的随机数据建立结构随机参数模型的理论与方法，旨在更全面而准确地反映结构参数的随机特性。以双层空间刚架为例验证了该理论与方法的正确性。

In order to reflect the stochastic characteristic of a structure more completely and accurately,this paper presents a theory and method of modeling with structural stochastic parameters using probabilistic finite element method and perturbant finite element method,on the basis of modeling with deterministic parameters.It is applied to double decker space frame,good results are gained.