NVH performance optimization of trimmed body based on noise transfer function

Chuqin Han; Jia Yao; Bingbing Jiang; Weiyi Chen

doi:10.1117/12.3025992

1 April 2024 NVH performance optimization of trimmed body based on noise transfer function

Chuqin Han, Jia Yao, Bingbing Jiang, Weiyi Chen

Proceedings Volume 13082, Fourth International Conference on Mechanical Engineering, Intelligent Manufacturing, and Automation Technology (MEMAT 2023); 130822G (2024) https://doi.org/10.1117/12.3025992
Event: 2023 4th International Conference on Mechanical Engineering, Intelligent Manufacturing and Automation Technology (MEMAT 2023), 2023, Guilin, China

Abstract

With the rapid development of automobile technology, how to improve the performance of noise, vibration and harshness (NVH) has always been the focus of automotive research and development. In this paper, the installation point of a car air conditioning is used as the excitation source, and the right ear of the driver and rear passenger is used as the response point for NVH researching. The acoustic-solid coupling finite element model of the vehicle is established by using the 3D body model of the vehicle and the finite element model equipped with the passenger compartment. Through the noise transfer function analysis, combined with the modal analysis of the prepared body and the analysis of working deformation, the body components with relatively large contribution to noise transfer are identified and optimized. The optimization results show that the sound pressure value at the driver is reduced by 12.7dB, and the peak sound pressure at the rear passenger is also significantly decreased. Thus, the NVH performance is improved. The analysis method and optimization scheme adopted in this paper are simple and feasible, which has certain reference value for the personnel and manufacturers engaged in automobile design.

(2024) Published by SPIE. Downloading of the abstract is permitted for personal use only.

Citation Download Citation

Chuqin Han, Jia Yao, Bingbing Jiang, and Weiyi Chen "NVH performance optimization of trimmed body based on noise transfer function", Proc. SPIE 13082, Fourth International Conference on Mechanical Engineering, Intelligent Manufacturing, and Automation Technology (MEMAT 2023), 130822G (1 April 2024); https://doi.org/10.1117/12.3025992

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KEYWORDS

Frequency response

Vibration

Acoustics

Analytical research

Design

Ear

Finite element methods

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