轨道机车车辆两系弹性悬挂结构力学特性及一、二系弹簧载荷协同优化

项目名称： 轨道机车车辆两系弹性悬挂结构力学特性及一、二系弹簧载荷协同优化

项目编号： No.51305467

项目类型： 青年科学基金项目

立项/批准年度： 2014

项目学科： 机械、仪表工业

项目作者： 韩锟

作者单位： 中南大学

项目金额： 26万元

中文摘要： 轨道机车车辆轮（轴）载荷分布不均匀，将严重影响轮轨粘着，必须严格控制以确保行车安全。具有两系悬挂结构的轨道机车车辆，其轮（轴）载荷分布状态由一、二系弹簧载荷分布状态决定。两系弹性冗余悬挂结构中各弹性元部件存在复杂相互作用，一、二系弹簧载荷耦合作用机制和分布变化规律尚未得到充分揭示。本项目采用多学科交叉研究方法，通过理论计算、数值模拟、实车实验，综合研究两系复杂耦合结构中各弹性部件的相互作用和变形协调，揭示一、二系弹簧载荷耦合作用机制，得出结构参数对一、二系弹簧载荷分布的影响规律，实现一、二系弹簧载荷协同优化，建立轨道机车车辆两系悬挂系统载荷分布协同控制方法，为高速重载机车车辆参数控制和结构优化提供科学依据。

中文关键词： 机车车辆悬挂结构；一;二系弹簧；载荷分布；协同优化；

英文摘要： Non-uniform wheel(axle) load distribution of railway locomotives and rolling stocks worsens wheel-rail adhesion performance. So, the differences in the load of wheels on the track must be strictly controlled to ensure traffic safety. Wheel(axle) load distribution of locomotive and car with two-stage suspension is determined by primary & secondary spring load distribution. The coupling mechanism and distribution regularities of primary & secondary spring load are not entirely understood by far because of complicated interactions with the elastic components in the redundant suspension structure.In this program, Multi-interdisciplinary method, theoretical calculation, numerical simulation and full-scale test will be adopted to study on interaction and deformation compatibility of elastic components in the two-stage complex system with coupling structures. The results will uncover the coupling mechanism of primary & secondary spring load, and reveal the law of the effect of the structural parameters on the distribution of them. Furthermore, the program will also implement collaborative optimization of primary & secondary spring load, and build coordination control measures for load distribution in the two-stage suspension system. The research results will provide scientific basis for the control of parameters and st

英文关键词： locomotive and car suspension system；primary & secondary spring；load distribution；collaborative optimization；