抗菱刚度对平车性能的影响研究  

Research on Effect of Anti-diamond Stiffness on Performance of Flat Car

作　　者：张博宁 王勇[1] 张胜建 吕小勇 ZHANG Boning;WANG Yong;ZHANG Shengjian;LYU Xiaoyong(Key Laboratory of Traction Power,Southwest Jiaotong University,Chengdu 610031,China)

机构地区：[1]西南交通大学牵引动力国家重点实验室,四川成都610031

出　　处：《机械制造与自动化》2023年第6期54-57,共4页Machine Building & Automation

摘　　要：以出口的某型平车作为分析对象,基于Simpack动力学软件建立动力学模型,在不同的抗菱刚度下,分别对空车和重车的新轮和磨耗轮4种工况进行仿真计算,分析其对平车的动力学性能的影响规律。研究结果表明:抗菱刚度对空车新轮的蛇行运动临界速度影响较小,其他3种工况的蛇行运动临界速度总体上呈现出阶梯状的增长,其中对重车新轮的蛇行运动临界速度影响最大。当抗菱刚度低于1.5 MN·m/rad时,磨耗轮的平稳性较差,尤其是空车磨耗轮的横向平稳性。抗菱刚度对轮重减载率指标和脱轨系数指标的影响很小,抗菱刚度对轮轴横向力指标有很大的影响。Taking a certain type of flat car exported to Pakistan as the analysis object,designs a dynamic model based on the Simpack dynamics software,simulates and calculates the four working conditions of the new wheel and the worn wheel of the empty car and the heavy car under different anti-diamond stiffness,and analizes its influence on the dynamic performance of the flat car.The results show that the anti-diamond stiffness has little effect on the critical speed of the meandering motion of the new wheel of the empty car.The critical speed of the meandering motion of the other three working conditions generally assumes stepped growth and has the greatest influence on the critical speed of the meandering motion of the heavy vehicle and the new wheel.When the anti-diamond stiffness is lower than 1.5 MN·m/rad,the stability of the wear wheel is poor,the lateral stability of the empty wear wheel in particular.The anti-diamond stiffness has little effect on the pindex of wheel load reduction rate and derailment coefficient,but great influence over the lateral force index of the wheel axle.

关 键 词：平车 抗菱刚度 SIMPACK 临界速度 平稳性 轮重减载率 脱轨系数 轮轴横向力 

分 类 号：TP391.9[自动化与计算机技术—计算机应用技术]