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| The Lateral Modeling and Parameter Optimization Based on Vehicle-Track Coupled Dynamics for a Special Railway Vehicle |
| LI Xiao-Wei-1, SHI Jun-Wu-2, ZHANG Jian-Wu-1 |
| (1.School of Mechanical Engineering, Shanghai Jiaotong University, Shanghai 200240, China;2.No.704 Research Institute, CSIC, Shanghai 200031, China） |
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Abstract Based on the vehicle-track coupled dynamics, the vehicle-track coupled model for a road-rail fire fighting vehicle traveling on the track was established and compared with the traditional railway vehicle model. For the validation of the two models, field experiments were made. The comparisons between the experimental test results and numeral simulation results indicate that the vehicle-track coupled model is better in accordance with the reality than the traditional railway vehicle model. Based on the vehicle-track model, the unified objective function method was used for the optimization of suspension parameters. The optimization results indicate that root-mean-square values of car body acceleration and wheel-rail force are reduced by 22.22% and 18.63%, respectively. So the method can improve riding quality and decrease wheel-rail dynamic interaction.
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Received: 25 March 2012
Published: 28 February 2013
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