An indicator for separation of structural and harmonic modes in output-only modal testing

被引：0
|
作者：
Brincker, R [1 ]
Andersen, P [1 ]
Moller, N [1 ]
机构：
[1] Univ Aalborg, Dept Bldg Technol & Struct Engn, DK-9000 Aalborg, Denmark
来源：
IMAC-XVIII: A CONFERENCE ON STRUCTURAL DYNAMICS, VOLS 1 AND 2, PROCEEDINGS | 2000年 / 4062卷
关键词：
D O I：
暂无
中图分类号：
TP39 [计算机的应用];
学科分类号：
081203 ; 0835 ;
摘要：
In this paper a technique for separation of harmonic and structural modes in output-only modal testing and identification is presented. The indicator is based on the basic differences of the statistical properties of a harmonic response and narrow-band stochastic response of a structural mode. The indicator is demonstrated on an example where a plate is loaded by an engine rotating with quasi-stationary speed. An output-only modal identification is performed using a technique based on Frequency Domain Decomposition (FDD), and what appears to be three harmonic components and five structural modes were identified.
引用
收藏
页码：1649 / 1654
页数：6
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