复杂结构联接刚度的优化识别技术

IDENTIFICATION TECHNIQUE OF THE CONNECTING STIFFNESS FOR COMPLEX STRUCTURE USING OPTIMIZATION

本文提出了在复杂结构进行模态综合分析时，极为关键的两子结构间或边界联接处联接刚度的一种多目标优化识别技术，在利用常规的ＰＩＤ法对有限元计算模型的联接刚度进行初识别的基础上，利用多目标规划方法对此进行结构动力修正，最后得到与实验结果相符的有限元计算模型及联接刚度值。

Abstract In order to identify the very important connecting stiffness between substructures or on theborders,in this paper,the authors present an identification technique using multi-objectiveprogramming to analysis complex structure by component mode synthesis method.First,connecting stiffness of finite element model are identified by parameter identification(PID)method,thendynamic modification is applied to the model using multi-objective programming.At last,the ocrrect comPuting finite element model and its connecting stiffness which coincide with modal testingresults are obtained.