Title: Optimisation of acoustical comfort in vehicle cabin using the goal programming
Authors: Zulkifli Mohd Nopiah; Ahmad Kadri Junoh; Ahmad Kamal Ariffin
Addresses: Department of Mechanical and Materials Engineering, Universiti Kebangsaan Malaysia, 43600, Bangi, Selangor, Malaysia ' Industrial Mathematics Research Group (IMRG), Institute of Engineering Mathematics, Universiti Malaysia Perlis, 02000, Kuala Perlis, Perlis, Malaysia ' Department of Mechanical and Materials Engineering, Universiti Kebangsaan Malaysia, 43600, Bangi, Selangor, Malaysia
Abstract: Car cabin acoustical comfort is one of the main features that may attract customers to purchase a new vehicle. The noise in a passenger car cabin is closely related to the vibration generated in the vehicle system. In this study, the effects of vibration on noise in the passenger car cabin have been studied. The vehicle acoustical comfort index (VACI) was used to evaluate the noise annoyance level and the vibration dose value (VDV) was used to evaluate the vibration level. Because engine noise is one of the dominant sources of interior noise, an approach has been used to study the correlation between engine speed and the level of generated vibration. According to the changes in the noise and the vibration level as a function of engine speed, a goal programming model was used to optimise the noise annoyance level in the passenger car cabin. At the end of the study, a multi-objective model was successfully built to optimise the noise annoyance levels by looking at the required vibration dose value at certain engine speeds.
Keywords: vehicle vibration; sound quality; vehicle acoustical comfort index; VACI; goal programming; vehicle cabin comfort; vehicle noise; passenger cars; noise annoyance level; vibration dose value; engine speed; optimisation; multi-objective modelling.
DOI: 10.1504/IJVNV.2013.055806
International Journal of Vehicle Noise and Vibration, 2013 Vol.9 No.3/4, pp.194 - 215
Published online: 28 Jun 2014 *
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