基于界面主从位移控制的频响子结构方法

发布时间：2018-04-05 15:01

本文选题：频响函数　切入点：子结构　出处：《计算力学学报》2017年02期

【摘要】：在复杂工程结构频响子结构分析中,各个子结构的频响函数往往是由不同的部门获得,各个子结构的频响函数可能是在不同的坐标系下得到,亦或有些子结构具有某种对称性,这需要对相应的子结构频响函数进行旋转和镜像变换后才能进行整体拼接。此外,子结构拼接时交界面的连接点有时可能存在不一致,为了满足位移协调和力平衡条件,本文基于界面主从位移控制原理,提出一种改进的频响子结构方法,该方法既能考虑子结构的旋转和镜像变换,也能考虑子结构界面间的柔性连接,并可大幅提高计算效率。当界面位移控制阵为单位阵时,改进的方法退化为传统的频响子结构方法。数值算例验证了所提方法的正确性和有效性。
[Abstract]:In the frequency response substructure analysis of complex engineering structures, the frequency response function of each substructure is often obtained by different departments. The frequency response function of each substructure may be obtained in different coordinate systems, or some substructures may have some symmetry.This requires rotation and image transformation of the corresponding substructure frequency response function before it can be stitched as a whole.In addition, the joint points of the interface may sometimes be inconsistent. In order to meet the conditions of displacement coordination and force balance, an improved frequency response substructure method based on the principle of interface master-slave displacement control is proposed in this paper.This method can not only consider the rotation and image transformation of substructure, but also consider the flexible connection between substructure interfaces, and greatly improve the computational efficiency.When the interfacial displacement control matrix is a unit matrix, the improved method is reduced to the traditional frequency response substructure method.Numerical examples show that the proposed method is correct and effective.
【作者单位】：大连理工大学工业装备结构分析国家重点实验室工程力学系;
【基金】：国家重点研发计划(2016YFB0200702) 国家自然科学基金(11232003,91515103) 111引智计划(B14013) 中央高校基本科研业务费专项资金(DUT15JJ(G)03)资助项目
【分类号】：TB11

【相似文献】