Journal of Shanghai Jiaotong University ›› 2016, Vol. 50 ›› Issue (02): 300-305.

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Simulation Analysis of VibroAcoustic Characteristics of Traditional Guzheng

DENG Xiaowei1,YU Zhengyue1,YAO Weiping1,CHEN Minjie2   

  1. (1. Department of Engineering Mechanics, Shanghai Jiaotong University, Shanghai 200240, China; 2. Shanghai National Musical Instrument Factory, Shanghai 201101, China)
  • Received:2015-03-14 Online:2016-02-29 Published:2016-02-29

Abstract: Abstract: Based on the vibroacoustic principle, the simplified model of traditional Guzheng was proposed. A 3D finite element model (FEM) of the Guzheng structure was established to analyze the vibration frequency response with the force of the strings and bridge acting on the panel as the vibration condition. The acoustic FEM and its analysis were established with vibration frequency response as the acoustic boundary conditions, and the frequency response characteristics of radiated sound pressure were obtained. The results show that the simulation results of Guzheng vibration are consistent with the experiment while the peak frequency of the radiated sound pressure of Guzheng is consistent with the simulation results. The acoustic radiation efficiency between 350 and 550 Hz is higher than that before 350 Hz. The upward acoustic radiation of Guzheng vibration is stronger than the downward one.

Key words: Key words: traditional Guzheng, vibroacoustic, finite element model (FEM), structure design

CLC Number: