Vehicle interior noise transfer function predictions applying semi-analytical, finite element and boundary element approaches
by Wael Elwali, Mingfeng Li, Teik C. Lim
International Journal of Vehicle Noise and Vibration (IJVNV), Vol. 7, No. 2, 2011

Abstract: The vehicle interior noise transfer functions that affect structure-borne paths critically are analysed using three different numerical techniques, namely the fast numerical modelling, finite element and boundary element. Firstly, the interior noise transfer function predictions employing the fast numerical modelling for simple rectangular cavity model are validated by comparison to the classical finite element calculations. Secondly, the finite element model is used to construct a more realistic cavity model to determine the viability of using rectangular cavity approximation in expressing the dynamics of a practical vehicle system. Results show that the rectangular cavity approximation performs quite well overall except in a narrow frequency range. These predictions are also compared to a limited set of experimental results performed in an earlier study. Thirdly, the computational times for all three numerical methods are also examined. The analysis reveals that the pure finite element method solves faster than the mixed finite-boundary element method in which the body structure is modelled using finite elements while the cavity is represented by boundary elements. On the other hand, the fast numerical modelling technique out-performs both the finite and boundary element approaches significantly due to its inherent modal superposition approach and use of only major cavity acoustic modes.

Online publication date: Tue, 14-Oct-2014

The full text of this article is only available to individual subscribers or to users at subscribing institutions.

 
Existing subscribers:
Go to Inderscience Online Journals to access the Full Text of this article.

Pay per view:
If you are not a subscriber and you just want to read the full contents of this article, buy online access here.

Complimentary Subscribers, Editors or Members of the Editorial Board of the International Journal of Vehicle Noise and Vibration (IJVNV):
Login with your Inderscience username and password:

Username:        Password:          Forgotten your password?

Want to subscribe?
A subscription gives you complete access to all articles in the current issue, as well as to all articles in the previous three years (where applicable). See our Orders page to subscribe.

If you still need assistance, please email subs@inderscience.com