Finite difference formulation for modal parameter estimation

被引：7
|
作者：
Yin, HP [1 ]
Duhamel, D [1 ]
机构：
[1] Ecole Natl Ponts & Chaussees, CERMMO, F-77455 Marne La Vallee 2, France
来源：
JOURNAL OF SOUND AND VIBRATION | 2000年 / 231卷 / 02期
关键词：
D O I：
10.1006/jsvi.1999.2599
中图分类号：
O42 [声学];
学科分类号：
070206 ; 082403 ;
摘要：
This paper deals with a new finite difference method for modal parameter estimation. This method uses formulas which involve differences between the frequency response data at three frequencies in the vicinity of a natural frequency to estimate this natural frequency together with the damping and the residue. Compared with the two-point finite difference method, tests with both analytical and experimental frequency response data with not well-separated modes show better estimations when using the three-point difference method. (C) 2000 Academic Press.
引用
收藏
页码：259 / 275
页数：17
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