Modal analysis on nanoclay epoxy-based fiber-glass laminates

被引：19

作者：

Avila, Antonio F. ^{[1
]}

Donadon, Lazaro V. ^{[1
]}

Duarte, Horacio V. ^{[1
]}

机构：

[1] Univ Fed Minas Gerais, Dept Mech Engn, Mech Composites & Nanostructured Mat Lab, BR-31270901 Belo Horizonte, MG, Brazil

来源：

COMPOSITE STRUCTURES | 2008年 / 83卷 / 03期

基金：

巴西圣保罗研究基金会;

关键词：

nanocomposites; modal analysis; laminates; nanoclay;

D O I：

10.1016/j.compstruct.2007.05.003

中图分类号：

O3 [力学];

学科分类号：

08 [工学]; 0801 [力学];

摘要：

This paper focuses on the vibration analysis of fiber glass/epoxy/nanoclay nanocomposites. The modal analysis was performed using a grid of 35 response measurement points. For modes I and 7, where the bending-twisting shape mode is observed, the damping coefficient increases by about 27%, on average. For modes 2 through 6, where bending is noticed, the average increase is around 68%, with peaks of 169%. A new shape mode comes out at 600 Hz frequency when the nanoclay content reaches 2%. A crossing mode, mode 4 with inferior frequency than mode 3, for the 5% and 10% nanoclay content is also observed. For events where high frequencies are generated, the nanoclay content of 2% leads to a higher energy dissipation. (C) 2007 Elsevier Ltd. All rights reserved.

引用

页码：324 / 333

页数：10

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