Journal of Theoretical and Applied Mechanics
- Volume 3 Issue 1
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- Pages.34-44
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- 2002
ANALYSIS ON THE VIBRO-ACOUSTICAL CHARACTERISTICS OF A PANEL-CAVITY COUPLED SYSTEM
-
Kim, Seock-Hyun
(Department of Precision Mechanical Engineering, Kangwon National University)
;
- Kang, Sang-Wook (Department of Mechanical Design and Production Engineering Seoul National University) ;
- Lee, Jang-Moo (Department of Mechanical Design and Production Engineering Seoul National University)
- Published : 2002.11.01
Abstract
Theoretical analysis Is carried out to identify the modal coupling effect between some particular acoustic modes of a vehicle compartment cavity and vibration modes of body panels like side doors, roof or floor. A simplified panel-cavity coupled model is investigated on the coupled resonance frequencies, modes and frequency response characteristics. Through parametric study, It Is possible to explain how the acoustic response of a coupled system will be determined by the vibration and acoustic property of the individual panel and cavity system. Full coupled system shows some interesting features different from those of the semi-coupled system In frequency, mode and acoustic response.
Keywords
- Panel-cavity coupled system;
- Coupled resonance frequency;
- Frequency response characteristics;
- Input mechanical impedance