Study on vibration and noise damping technique of large bus body

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Journal of Vibration and Shock ›› 2013, Vol. 32 ›› Issue (6) : 121-126.

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Study on vibration and noise damping technique of large bus body

Jiao Yinghou，Chen Zhaobo，Wang Shichao，Xu Lei，Shang Yuanjiang

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Abstract

Boundary element method for sound field of car room and the contribution of body segments are used in this paper, then find out the car noise sound pressure peak corresponds to the vibration frequency of the premises and the peak under the noise sources section. To get the goal of bus body vibration-noise reductive and lightweight body design, damping composite structure parameters under corresponding constraints are solved base on sound radiation, modal frequencies and loss factors characteristics of damping composite structures model. It has achieved good results after damping vibration and noise reduction on the bus body.

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sound field analysis / sound contribution / damping structure / optimization

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Jiao Yinghou;Chen Zhaobo;Wang Shichao;Xu Lei;Shang Yuanjiang. Study on vibration and noise damping technique of large bus body[J]. Journal of Vibration and Shock, 2013, 32(6): 121-126