A comparison of model reduction techniques based on modal projection for structures with frequency-dependent damping

被引：53

作者：

Rouleau, Lucie ^{[1
]}

Deue, Jean-Francois ^{[1
]}

Legay, Antoine ^{[1
]}

机构：

[1] Conservatoire Natl Arts & Metiers, LMSSC, 2 Rue Conte, F-75003 Paris, France

来源：

MECHANICAL SYSTEMS AND SIGNAL PROCESSING | 2017年 / 90卷

关键词：

Modal projection; Reduction methods; Viscoelastic damping; Finite element models; TRUNCATION AUGMENTATION METHODS; ACCELERATION; SYSTEMS;

D O I：

10.1016/j.ymssp.2016.12.013

中图分类号：

TH [机械、仪表工业];

学科分类号：

0802 ;

摘要：

Frequency response functions are often used in the design of damped structures to assess the level of vibration and evaluate the performances of a damping treatment. Rather than evaluating frequency sweeps on a large-scale finite element system, the frequency response functions can be efficiently computed through model reduction techniques. This paper reviews and compares the reduction techniques based on modal projection which have been developed for structures with frequency-dependent damping, such as structures treated with constrained viscoelastic layers. The insight obtained by this comparison allows to make a motivated choice for a particular model reduction technique. All reviewed methods are quantitatively compared on two illustrative examples. (C) 2016 Elsevier Ltd. All rights reserved.

引用

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页码：110 / 125

页数：16

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