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Vehicle Panel Vibro-Acoustic Behavior and Damping
ISSN: 0148-7191, e-ISSN: 2688-3627
Published May 05, 2003 by SAE International in United States
Annotation ability available
Damping treatments are widely used in passenger vehicles, but the knowledge of damping treatments is often fragmentary in the industry. In this study, vibro-acoustics behavior of a set of vehicle floor and dash panels with various types of damping treatments was investigated. Sound transmission loss, sound radiation efficiency as well as damping loss factor were measured. The damping treatments ranged from laminated steel construction (thin viscoelastic layer) and doubler plate construction (thick viscoelastic layer) to less structural “bake-on” damping and self-adhesive aluminum foil-backed damping treatments. In addition, the bare vehicle panels were tested as a baseline and the fully carpeted floor panel was tested as a reference. The test data were then examined together with analytical modeling of some of the test configurations. As expected, the study found that damping treatments add more than damping. They also add mass and change body panel stiffness. Each of the three factors affects different aspects of noise and vibration of vehicle panels.
CitationHe, H., Zhang, Q., and Fridrich, R., "Vehicle Panel Vibro-Acoustic Behavior and Damping," SAE Technical Paper 2003-01-1406, 2003, https://doi.org/10.4271/2003-01-1406.
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