Simulation analysis and parameter optimization of vibration and noise of belt conveyor roller set
The vibration noise generated by the rollers of the belt conveyor is influenced by various factors.To address the issue of excessive vibration noise,a method was proposed using the finite element-boundary element theory to analyze and optimize the vibration noise of the rollers.Firstly,modal analysis and dynamic simulation of the belt conveyor were carried out to explore the vibration characteristics of the rollers;then,the harmonic response analysis of the acoustic field was conducted using the finite element-boundary element composite acoustic field simulation method,to calculate the distribution of the acoustic field in the roller group,and an actual test platform was constructed to validate the reliability of the acoustic simulation model;finally,by considering the conveying capacity and lightweight constraints,the optimal solution for the structural parameters of the roller group and the working parameters of the roller was determined.The optimal solution of the structural parameters of the roller group and the working parameters of the roller were obtained with the constraints of conveying capacity and light weight.The results show that the finite element-boundary element method effectively simulate the sound field distribution and change rule of the roller group,after the optimization,the noise sound pressure level of the roller group is about 6.1 dB lower,and the comprehensive performance of the roller group has been improved,which can be used to guide the optimal design of the belt conveyor in the actual project.
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