Road Noise Identification and Reduction Measures Mahindra and Mahindra, Limited

Format:

Conference/Event

Author/Creator:

Rao, Rao, author.

Contributor:

Mansinh, Kumbhar S.

Patil, Sanjeev

R., Prasath

Conference Name:

SAE 2013 Noise and Vibration Conference and Exhibition (2013-05-20 : Grand Rapids, Michigan, United States)

Language:

English

Physical Description:

1 online resource

Place of Publication:

Warrendale, PA SAE International 2013

Summary:

In a scenario where cost and weight targets are becoming critical, we tend to produce lighter and more powerful vehicles. In this context, NVH becomes one of crucial parameters in overall performance delivery. Other than power train, road induced noise also becomes an important parameter within vehicle development. Predecessor vehicle is body over frame structure and here a monocoque vehicle is considered for study. Different techniques like transfer path analysis, vibro-acoustic modal analysis, operational deflection shapes are used to identify the major force paths, radiating panels and their sensitivity to noise at operator ear location. Simulation model of body is built with good correlation and input forces are given at different attachment points to predict the noise levels. This combined approach helped us in reducing the overall noise level at certain constant speed by 4 dB(A) and also with great ease. All recommendations from this exercise are implemented

Notes:

Vendor supplied data

Publisher Number:

2013-01-1917

Access Restriction:

Restricted for use by site license