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D. Gong, J. Zhou, J. Zhou, "Optimization of Vibration Reduction Performance of Subway Air Compressor", in J. Pombo, (Editor), "Proceedings of the Fifth International Conference on Railway Technology: Research, Development and Maintenance", Civil-Comp Press, Edinburgh, UK, Online volume: CCC 1, Paper 22.15, 2022, doi:10.4203/ccc.1.22.15

Keywords: subway, air compressor, vibration reduction optimization, vibration test, finite element simulation, vibration isolation efficiency.

Abstract

Vibration of air compressor has a great impact on smoothness and comfort of subway. In order to effectively reduce vibration of air compressor, based on finite element model of air compressor and active vibration control theory, vibration reduction optimization design is carried out. By means of finite element simulation and calculation, parameters of damping element, including hanging frequency, stiffness and damping ratio, are optimized by combining sweep-frequency excitation and constant-frequency excitation, and verified by experiments. The results show that the lower hanging frequency of air compressor, the better its vibration isolation efficiency. The higher damping ratio, but the lower vibration isolation efficiency. According to results of sweep-frequency excitation simulation, the optimal hanging frequency of air compressor is 7Hz and damping ratio is 0.06. Results of constant-frequency excitation simulation and experiments indicate that, when the optimal scheme is applied, the vibration isolation efficiency can reach to about 90%, which meets design requirements.

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Front Page Browse CCC CCP CSETS CTR IJRT Other Authors Search Purchase Guide FAQ Contact us	Civil-Comp Conferences ISSN 2753-3239 CCC: 1 PROCEEDINGS OF THE FIFTH INTERNATIONAL CONFERENCE ON RAILWAY TECHNOLOGY: RESEARCH, DEVELOPMENT AND MAINTENANCE Edited by: J. Pombo Paper 22.15 Optimization of Vibration Reduction Performance of Subway Air Compressor D. Gong, J. Zhou and J. Zhou Institute of Rail Transit, Tongji University, Shanghai, China doi:10.4203/ccc.1.22.15 Full Bibliographic Reference for this paper D. Gong, J. Zhou, J. Zhou, "Optimization of Vibration Reduction Performance of Subway Air Compressor", in J. Pombo, (Editor), "Proceedings of the Fifth International Conference on Railway Technology: Research, Development and Maintenance", Civil-Comp Press, Edinburgh, UK, Online volume: CCC 1, Paper 22.15, 2022, doi:10.4203/ccc.1.22.15 Keywords: subway, air compressor, vibration reduction optimization, vibration test, finite element simulation, vibration isolation efficiency. Abstract Vibration of air compressor has a great impact on smoothness and comfort of subway. In order to effectively reduce vibration of air compressor, based on finite element model of air compressor and active vibration control theory, vibration reduction optimization design is carried out. By means of finite element simulation and calculation, parameters of damping element, including hanging frequency, stiffness and damping ratio, are optimized by combining sweep-frequency excitation and constant-frequency excitation, and verified by experiments. The results show that the lower hanging frequency of air compressor, the better its vibration isolation efficiency. The higher damping ratio, but the lower vibration isolation efficiency. According to results of sweep-frequency excitation simulation, the optimal hanging frequency of air compressor is 7Hz and damping ratio is 0.06. Results of constant-frequency excitation simulation and experiments indicate that, when the optimal scheme is applied, the vibration isolation efficiency can reach to about 90%, which meets design requirements. download the full-text of this paper (PDF, 6 pages, 377 Kb) go to the previous paper go to the next paper return to the table of contents return to the volume description
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