Finite Element and Boundary Element Models for Predicting the Vibro-Acoustic Behaviour of Multi-Layered Structures

Format:

Conference/Event

Author/Creator:

Coyette, J. P., author.

Conference Name:

SAE Noise and Vibration Conference and Exposition (1995-05-15 : Traverse City, Michigan, United States)

Language:

English

Physical Description:

1 online resource

Place of Publication:

Warrendale, PA SAE International 1995

Summary:

Layered structures made from elastic and porous materials are widely used as insulation systems in the automotive industry. They have a complex dynamic behavior which is influenced by the various interaction mechanisms within the porous material. The paper concentrates on modeling these systems using a 3-D finite element (FE) approach for the structure combined with a boundary element (BE) procedure for the acoustic radiation process. The key part is a Biot's 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 the evaluation of the acoustic response (radiated power, field pressure). Numerical applications are presented in order to show the capabilities of the developed procedures

Notes:

Vendor supplied data

Publisher Number:

951341

Access Restriction:

Restricted for use by site license