High Performance Vehicle Chassis Structure for NVH Reduction General Motors Corporation

Format:

Conference/Event

Author/Creator:

Bennur, Mallikarjuna, author.

Conference Name:

SAE 2006 World Congress & Exhibition (2006-04-03 : Detroit, Michigan, United States)

Language:

English

Physical Description:

1 online resource

Place of Publication:

Warrendale, PA SAE International 2006

Summary:

The main objective of this paper was to determine if the vehicle performance can be maintained with a reduced mass cradle structure. Aluminum and magnesium cradles were compared with the baseline steel cradle. First, the steel chassis alone is analyzed with the refined finite element model and validated with experimental test data for the frequencies, normal modes, stiffnesses and the drive-point mobilities at various attachment mount/bushing locations. The superelement method in conjunction with the component mode synthesis (CMS) technique was used for each component of the vehicle such as Body-In-White, Instrument Panel, Steering Column Housing and Wheel, Seats, Cradles, CRFM, et cetera After assemblage of all the superelements, analysis was carried out by changing the front and rear cradle gauges and the material properties. The drive-point mobility response was computed at various locations and the noise (sound pressure) level was calculated at the driver and passenger ears. This study considers the structure-borne noise frequency range between 25Hz and 250Hz. It will be shown that an aluminum cradle can achieve the same vehicle performance as a steel cradle while reducing weight

Notes:

Vendor supplied data

Publisher Number:

2006-01-0708

Access Restriction:

Restricted for use by site license