Vibrational and sound radiation properties of a double layered diesel engine gear cover
Document Type
Conference Proceeding
Publication Date
5-17-1999
Department
Department of Mechanical Engineering-Engineering Mechanics
Abstract
The introduction of a thin fluid layer between two layers of sheet metal offers a highly effective and economical alternative to the use of constrained viscoelastic damping layers in sheet metal structures. A diesel engine gear cover, which is constructed of two sheet metal sections spot welded together, takes advantage of fluid layer damping to produce superior vibration and sound radiation performance. In this paper, the bending of a double layered plate coupled through a thin fluid layer is modeled using a traveling wave approach which results in a impedance function that can be used to assess the vibration and sound radiation performance of practical double layered plate structures. Guided by this model, the influence of fluid layer thickness and inside-to-outside sheet thickness is studied.
Publication Title
SAE Technical Papers
Recommended Citation
Welsh, D.,
&
Evensen, H.
(1999).
Vibrational and sound radiation properties of a double layered diesel engine gear cover.
SAE Technical Papers.
http://doi.org/10.4271/1999-01-1773
Retrieved from: https://digitalcommons.mtu.edu/michigantech-p/14256
Publisher's Statement
Copyright © 1999 Society of Automotive Engineers, Inc. Publisher’s version of record: https://doi.org/10.4271/1999-01-1773