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S.K. Sharma, A. Kumar, "The Impact of a Rigid-Flexible System on the Ride Quality of Passenger Bogies using a Flexible Carbody", in J. Pombo, (Editor), "Proceedings of the Third International Conference on Railway Technology: Research, Development and Maintenance", Civil-Comp Press, Stirlingshire, UK, Paper 87, 2016. doi:10.4203/ccp.110.87

Keywords: flexible vibration, dynamic vibration absorber, modal frequency, carbody, suspension parameters, finite element.

Summary

The lighter structure of a passenger railway vehicle is an effective way of improving the reduction in energy consumption and dynamic forces between wheel and rail. However, a light structure leads to the situation of resonant vibration in a carbody. To restrain carbody vibration, the theory of a dynamic vibration absorber (DVA) was applied to a case study. A carbody was modeled as an Euler-Bernoulli beam with equipment mounted on the chassis and regarded as a DVA. Suspension parameters of the equipment were optimized based on the modal analysis of the beam and parameter optimization of the DVA. It was found that equipment mounted on the carbody chassis could reduce the flexible vibration of the carbody, and the optimum suspension frequency could be calculated theoretically with the first-order bending mode of the carbody. Heavy equipment should be mounted as close as possible to the carbody center to obtain a significant vibration reduction, while light equipment has a quite limited contribution. Also, the effect of the suspension parameter was shown on the bending frequency of the flexible carbody by means of a finite element analysis.

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Front Page Browse CCP CSETS CTR IJRT Other Authors Search Purchase Guide FAQ Contact us	Civil-Comp Proceedings ISSN 1759-3433 CCP: 110 PROCEEDINGS OF THE THIRD INTERNATIONAL CONFERENCE ON RAILWAY TECHNOLOGY: RESEARCH, DEVELOPMENT AND MAINTENANCE Edited by: J. Pombo Paper 87 The Impact of a Rigid-Flexible System on the Ride Quality of Passenger Bogies using a Flexible Carbody S.K. Sharma¹ and A. Kumar² ¹Centre for Transportation Systems, Indian Institute of Technology Roorkee, India ²Department of Mechanical and Industrial Engineering, Indian Institute of Technology Roorkee, India doi:10.4203/ccp.110.87 purchase the full-text of this paper Full Bibliographic Reference for this paper S.K. Sharma, A. Kumar, "The Impact of a Rigid-Flexible System on the Ride Quality of Passenger Bogies using a Flexible Carbody", in J. Pombo, (Editor), "Proceedings of the Third International Conference on Railway Technology: Research, Development and Maintenance", Civil-Comp Press, Stirlingshire, UK, Paper 87, 2016. doi:10.4203/ccp.110.87 Keywords: flexible vibration, dynamic vibration absorber, modal frequency, carbody, suspension parameters, finite element. Summary The lighter structure of a passenger railway vehicle is an effective way of improving the reduction in energy consumption and dynamic forces between wheel and rail. However, a light structure leads to the situation of resonant vibration in a carbody. To restrain carbody vibration, the theory of a dynamic vibration absorber (DVA) was applied to a case study. A carbody was modeled as an Euler-Bernoulli beam with equipment mounted on the chassis and regarded as a DVA. Suspension parameters of the equipment were optimized based on the modal analysis of the beam and parameter optimization of the DVA. It was found that equipment mounted on the carbody chassis could reduce the flexible vibration of the carbody, and the optimum suspension frequency could be calculated theoretically with the first-order bending mode of the carbody. Heavy equipment should be mounted as close as possible to the carbody center to obtain a significant vibration reduction, while light equipment has a quite limited contribution. Also, the effect of the suspension parameter was shown on the bending frequency of the flexible carbody by means of a finite element analysis. purchase the full-text of this paper (price £22) go to the previous paper go to the next paper return to the table of contents return to the book description purchase this book (price £85 +P&P)
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