Modal analysis of cylindrical shell using circumference reduction method and non-linear least squares approach

被引：0

作者：

Kitahara, A. ^{[1
]}

Yoshimura, T. ^{[1
]}

机构：

[1] Tokyo Metropolitan Univ, Dept Mech Engn, Hachioji, Tokyo, Japan

来源：

PROCEEDINGS OF INTERNATIONAL CONFERENCE ON NOISE AND VIBRATION ENGINEERING (ISMA2014) AND INTERNATIONAL CONFERENCE ON UNCERTAINTY IN STRUCTURAL DYNAMICS (USD2014) | 2014年

关键词：

D O I：

暂无

中图分类号：

TH [机械、仪表工业];

学科分类号：

0802 ;

摘要：

For precision improvement of the noise prediction, the dynamic characteristics of structures need to be verified. This paper focuses on modal identification of the cylindrical shell structures. In such structures, vibration modes with complicated shapes exist densely. And structures made of composite material have high damping characteristics. Therefore, the experimental modal parameter extraction is somewhat difficult task. In this study, we investigate modal parameter identification method which is able to be applied to such structures. We propose circumference reduction method based on basis function, and non-linear least squares approach of curve-fitting. The results of proposed method and FEM modal analysis are compared and evaluated.

引用

页码：1747 / 1753

页数：7

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