Thermal effects on the sound transmission through aerospace composite structures

被引：28

作者：

Chronopoulos, D. ^{[1
,2
]}

Ichchou, M. ^{[2
]}

Troclet, B. ^{[1
,3
]}

Bareille, O. ^{[2
]}

机构：

[1] EADS Astrium ST, F-78133 Les Mureaux, France

[2] Ecole Cent Lyon, F-69134 Ecully, France

[3] Ecole Normale Super, F-94230 Cachan, France

来源：

AEROSPACE SCIENCE AND TECHNOLOGY | 2013年 / 30卷 / 01期

关键词：

Composite structures; Temperature effects; Statistical Energy Analysis; Acoustic transparency; TEMPERATURE THERMOMECHANICAL BEHAVIOR; CARBON-CARBON COMPOSITES; FINITE-ELEMENT; WAVE-PROPAGATION; IMPACT RESPONSE; PANELS;

D O I：

10.1016/j.ast.2013.08.003

中图分类号：

V [航空、航天];

学科分类号：

08 ; 0825 ;

摘要：

The temperature dependent material characteristics of a layered panel are experimentally measured using a Thermal Mechanical Analysis (TMA) configuration. The temperature dependent wave dispersion characteristics of the panel are subsequently computed using a Wave Finite Element Method (WFEM). The results are experimentally validated by measurements on the dynamic response of the structure for various temperatures. The WFEM predictions are eventually used within a wave-context SEA approach in order to calculate the temperature dependent Sound Transmission Loss (STL) of the layered panel. Results on the STL for temperatures varying between -100 degrees C to 160 degrees C are computed for a structure operating at sea level. The importance of the glass transition region on the panel's vibroacoustic response is exhibited and discussed. The acoustic transparency of a composite structure operating at higher altitudes is also discussed. (C) 2013 Elsevier Masson SAS. All rights reserved.

引用

页码：192 / 199

页数：8

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