Automotive Applications of Three-Dimensional Acoustic Finite Elements

Format:

Conference/Event

Author/Creator:

Sung, S. H., author.

Conference Name:

SAE International Congress & Exposition (1981-02-23 : Detroit, Michigan, United States)

Language:

English

Physical Description:

1 online resource

Place of Publication:

Warrendale, PA SAE International 1981

Summary:

Three-dimensional acoustic finite elements have been applied to calculate the knock-induced' cavity resonances for combustion chambers and the cavity booming' frequencies for passenger compartments. The NASTRAN finite element program is employed to solve the acoustic free-vibration problems, and resonant frequencies obtained from these numerical predictions have been compared with experimental results. In addition, the resonant mode shapes are shown and illustrate the acoustic pressure distributions and nodal surfaces for particular resonant frequencies.Besides a prismatic passenger compartment with bench-seat' model, this paper also presents results for a general bucket-seat' model with irregular cross-sectional seat contours. Moreover, a rather complicated cavity model such as a combustion chamber is included to illustrate the capabilities of the finite element analysis. The results illustrated in this paper are of interest in combustion chamber thermodynamic property studies, knock-sensor designs, and vehicle interior noise studies

Notes:

Vendor supplied data

Publisher Number:

810397

Access Restriction:

Restricted for use by site license