基于车-轨耦合的轨道特种车辆横向建模及参数优化  

The Lateral Modeling and Parameter Optimization Based on Vehicle-Track Coupled Dynamics for a Special Railway Vehicle

作　　者：李小伟[1] 史俊武[2] 张建武[1] 

机构地区：[1]上海交通大学,机械与动力工程学院,上海200240 [2]中国船舶重工集团公司第704研究所,上海200031

出　　处：《上海交通大学学报》2013年第2期236-241,共6页Journal of Shanghai Jiaotong University

基　　金：上海市科学技术委员会科研计划项目(08251202900)

摘　　要：基于车辆-轨道耦合动力学理论,建立了路轨两用消防车在轨道上行驶的车辆-轨道耦合横向模型,并与传统轨道车辆横向模型进行比较,通过实车试验验证了车辆-轨道耦合横向模型的正确性.在此基础上,建立了多目标优化模型,并采用统一目标函数法对轨道行驶系统的悬架参数进行优化.结果表明,该优化设计方法使车身横向加速度均方根值减小了22.22%,轮轨横向作用力均方根值减小了18.63%,提高了车辆横向平稳性,降低了轮轨横向动作用.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.

关 键 词：路轨两用消防车 车辆-轨道耦合动力学 参数优化 惩罚函数法 

分 类 号：U273.98[机械工程—车辆工程]