Reducing Sound Radiation of an Automated Transmission by Means of Viscoelastic Multilayer Damping Smarttech Engineering Services

Format:

Conference/Event

Author/Creator:

Oliveira, Oliveira, author.

Contributor:

Coser, Lucas

Figueiredo, Tiago

Macedo, Bruno

Oliveira, Carina

Porto, Vinicius

Vilaboim, Herbert

Conference Name:

SAE Brasil International Noise and Vibration Congress (2010-10-17 : Santa Catarina, Brazil)

Language:

English

Physical Description:

1 online resource

Place of Publication:

Warrendale, PA SAE International 2010

Summary:

Brazilian automotive industry has reached a high level of competition and production, and in this scenario noise radiation is a very important factor in which quality, cost and comfort have to meet consumers' impressions of a vehicle. Engineers face today difficult challenges when it comes to improvement of noise emissions: solutions should be fast, cheap and effective. This work presents a recent study to reduce shell noise radiation from an automated transmission mechanism using two solutions of structural damping: modification in the material of the noise source and attenuation of shell movement by using surface patches of viscoelastic sandwich. Although traditionally applied to whole radiating surfaces, the second solution demonstrates that portions of the material applied in proper selected locations are very effective for reduction of shell noise, therefore enabling the usage of smaller sizes of viscoelastic material instead of complete coverings. That fact represents an enormous advantage in terms of cost of application for the material and provides the NVH engineer a very useful tool to cope with sound radiation problems

Notes:

Vendor supplied data

Publisher Number:

2010-36-0512

Access Restriction:

Restricted for use by site license