The effects of multilayer sound-absorbing treatments on the noise field inside a plate backed cavity

被引:22
作者
Atalla, N
Panneton, R
机构
[1] GAUS, Mechanical Engineering Department, Universite dé Sherbrooke, Sherbrooke
关键词
D O I
10.3397/1.2828408
中图分类号
O42 [声学];
学科分类号
070206 ; 082403 ;
摘要
In this paper, a finite element approach is used to investigate the noise field inside a rigid-walled cavity coupled to a vibrating plate with a multilayer sound-absorbing treatment, The treatment is made from a combination of elastic, poroelastic, and airspace layers, The approach uses classical elastic and fluid elements to model the elastic and fluid media, For poroelastic media, it uses a two-field displacement formulation derived from the Blot theory, Furthermore, it accounts for coupling between elastic, poroelastic, and airspace layers, Numerical results illustrating several practical configurations are presented, They underline several features: the effects of the modal behavior of the structure, the nature of the poroelastic material, the effects of the damping added by the poroelastic material, the mounting configuration of the sound absorbing treatment, and finally the boundary conditions of the plate. (C) 1996 Institute of Noise Control Engineering.
引用
收藏
页码:235 / 243
页数:9
相关论文
共 26 条
[1]  
Allard J.F., 1993, Propagation of sound in porous media, DOI [10.1002/9780470747339, DOI 10.1002/9780470747339]
[2]  
ATALLA N, 1993, 934381 AIAA
[3]  
BARTON CK, 1978, TP1321 NASA
[4]  
BATOZ JL, 1992, MODELISATION STRUCTU
[5]   A GENERAL FORMULATION FOR THE SOUND RADIATION FROM RECTANGULAR, BAFFLED PLATES WITH ARBITRARY BOUNDARY-CONDITIONS [J].
BERRY, A ;
GUYADER, JL ;
NICOLAS, J .
JOURNAL OF THE ACOUSTICAL SOCIETY OF AMERICA, 1990, 88 (06) :2792-2802
[7]   NORMAL INCIDENCE SOUND-TRANSMISSION THROUGH DOUBLE-PANEL SYSTEMS LINED WITH RELATIVELY STIFF, PARTIALLY RETICULATED POLYURETHANE FOAM [J].
BOLTON, JS ;
GREEN, ER .
APPLIED ACOUSTICS, 1993, 39 (1-2) :23-51
[8]  
Coyette JP, 1995, PROCEEDINGS OF INTER-NOISE 95 - THE 1995 INTERNATIONAL CONGRESS ON NOISE CONTROL ENGINEERING, VOLS 1 AND 2, P1279
[9]   FINITE-ELEMENT MODEL FOR RIGID POROUS ABSORBING MATERIALS [J].
CRAGGS, A .
JOURNAL OF SOUND AND VIBRATION, 1978, 61 (01) :101-111
[10]   ACOUSTO-ELASTICITY - GENERAL THEORY, ACOUSTIC NATURAL MODES AND FORCED RESPONSE TO SINUSOIDAL EXCITATION, INCLUDING COMPARISONS WITH EXPERIMENT [J].
DOWELL, EH ;
GORMAN, GF ;
SMITH, DA .
JOURNAL OF SOUND AND VIBRATION, 1977, 52 (04) :519-542