机械制造与自动化2024，Vol.53Issue(3)：123-126,145,5.DOI:10.19344/j.cnki.issn1671-5276.2024.03.026
计算重根特征向量灵敏度的正则完备法
Regular Complete Method for Computing Sensitivity of Repeated Root Eigenvectors
摘要
Abstract
In the sensitivity-based model updating of the axisymmetric structure,the sensitivity of the repeated root eigenvectors is a crucial parameter to determine the optimization direction of structural parameters.Based on the method of calculating eigenvector sensitivity proposed by YANG Qiuwei,regular complete method is proposed by adding an adjustable regular term on both sides of the governing equation to eliminate the singularity of the dynamic stiffness matrix and combining with the complete modal method to calculate the modal participation factor.Although the method is derived by calculating the sensitivity of the repeated root eigenvectors,it can also be used for the calculation of the sensitivity of the single root eigenvector.Experimental examples verify the feasibility of the proposed method in axisymmetric model updating.关键词
轴对称模型修正/重根特征向量/特征向量灵敏度Key words
axisymmetric model updating/repeated root eigenvectors/eigenvector sensitivity分类
信息技术与安全科学引用本文复制引用
李成立,王彤..计算重根特征向量灵敏度的正则完备法[J].机械制造与自动化,2024,53(3):123-126,145,5.基金项目
国家自然科学基金资助项目(12272172) （12272172）
江苏高校优势学科建设工程资助项目 （）
