The use of finite-element and boundary-element models for predicting the vibro-acoustic behaviour of layered structures

被引：16

作者：

Coyette, JP ^{[1
]}

机构：

[1] Numer Integrat Technol NV, B-3001 Louvain, Belgium

来源：

ADVANCES IN ENGINEERING SOFTWARE | 1999年 / 30卷 / 02期

关键词：

finite-element; boundary-element; poro-elastic;

D O I：

10.1016/S0965-9978(96)00041-5

中图分类号：

TP39 [计算机的应用];

学科分类号：

081203 ; 0835 ;

摘要：

Layered structures made from elastic and porous materials are widely used as insulation systems in the automotive industry. They have a complex dynamic behaviour that is influenced by the various interaction mechanisms within the porous material. This paper concentrates on modelling these systems using a three-dimensional finite-element (FE) approach for the structure combined with a boundary-element (BE) procedure for the acoustic radiation process. The key part is a Blot model for the two-phase porous material. A mixed displacement formulation is selected. The model can be used for predicting the surface impedance and/or the transmission loss characteristics of layered material. The combined use of this FE/BE model enables evaluation of the acoustic response (radiated power, held pressure). Numerical applications are presented in order to show the capabilities of the developed procedures. (C) 1998 Elsevier Science Ltd. All rights reserved.

引用

页码：133 / 139

页数：7

共 11 条

[1]

Allard JF, 1993, PROPAGATION SOUND PO, P79, DOI [10.1007/978-94-011-1866-8_5, DOI 10.1007/978-94-011-1866-8_5]

[2] THEORY OF ELASTICITY AND CONSOLIDATION FOR A POROUS ANISOTROPIC SOLID [J].