Structural response reconstruction for non-proportionally damped systems in the presence of closely spaced modes

被引：1
|
作者：
Wan, Zhimin [1 ]
Wang, Ting [1 ]
Huang, Qibai [1 ]
Li, Lin [1 ]
机构：
[1] Huazhong Univ Sci & Technol, State Key Lab Digital Mfg Equipment & Technol, Wuhan 430074, Peoples R China
来源：
JOURNAL OF VIBROENGINEERING | 2014年 / 16卷 / 08期
基金：
中国国家自然科学基金;
关键词：
response reconstruction; non-proportionally damped system; closely spaced modes; empirical mode decomposition; IDENTIFICATION; DECOMPOSITION; PROGNOSTICS;
D O I：
暂无
中图分类号：
R318 [生物医学工程];
学科分类号：
0831 ;
摘要：
An approach of structural response reconstruction for non-proportionally damped systems is proposed in this paper, which is a time domain method based on the empirical mode decomposition method with intermittency criteria and modal superposition method. The state space method is employed for decoupling the dynamic system equation to obtain the complex mode shapes. Response reconstruction of the structural system in the presence of closely spaced modes is studied in detail. The key idea is to regard each set of closely spaced modes as an integral part. Two numerical examples are conducted to validate the effectiveness of the proposed method.
引用
收藏
页码：3740 / 3758
页数：19
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