A power series expansion method based on frequency response function matrix for sensitivity analysis of viscously damped system

被引：0
|
作者：
Shen, Jingfang
Diao, Yuxian [1 ]
机构：
[1] Huazhong Agr Univ, Dept Sci, Wuhan 430070, Hubei, Peoples R China
来源：
2017 3RD INTERNATIONAL CONFERENCE ON ENERGY, ENVIRONMENT AND MATERIALS SCIENCE (EEMS 2017) | 2017年 / 94卷
关键词：
MODE SHAPE SENSITIVITIES; EIGENVECTOR DERIVATIVES; NATURAL FREQUENCY; EIGENVALUES; EIGENSOLUTIONS; EFFICIENT; DISTINCT;
D O I：
10.1088/1755-1315/94/1/012007
中图分类号：
TE [石油、天然气工业]; TK [能源与动力工程];
学科分类号：
0807 ; 0820 ;
摘要：
The modal method represents the derivative of the eigenvector as a superposition of all modes. Although this method is relatively effective, it has a problem of modal truncation error. In this paper, based on the two kinds of calculation methods of frequency response function matrix, the transformation relationship between system matrices and eigensolutions is proposed. Meanwhile the transition from the high-order modes to the low-order modes is emphasized. Then the conversion relationship is applied to reduce the modal truncation error, and finally a more accurate method for sensitivity analysis is derived.
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页数：6
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