采用变刚度装置提高受电弓性能

介绍了1种采用变刚度装置提高受电弓性能的新方法。     

转K7型转向架轮对径向装置结构刚度研究

为分析转K7型转向架轮对径向装置适应产品制造误差与线路扭曲不平顺的能力以及控制轮对水平运动的能力,对其整体结构及主要组成部件———副构架和连接杆的各向刚度进行了理论研究。计算结果表明:轮对径向装置适应产品制造误差和线路扭曲不平顺的能力均较强,并可为转向架提供足够的剪切刚度;副构架和连接杆具有良好的结构振动特性,能够保证轮对径向装置有效发挥控制轮对水平运动的作用。     

SYS650型空气弹簧的研究

介绍了出口巴基斯坦的SYS650型空气弹簧的主要技术要求、结构设计、有限元分析及型式试验。     

D45型落下孔车车体性能仿真分析

简要介绍了D45型落下孔车的主要结构及技术参数,对其车体性能进行了仿真分析,得到了关键部件的强度、刚度、模态、稳定性分析结果。     

一款高速车牵引橡胶球铰承载特性的研究

通过比较几款传统牵引装置上所用的橡胶球铰的结构及承载特性,提出了一款适用于高速车牵引装置的球铰结构,产品研制表明,该结构能很好地满足牵引系统所需要的刚度及疲劳特性要求,适合在高速车上使用。     

转动阻力因子试验在新加坡电力蓄电池双能源工程车上的应用

EN 14363定义的转动因子X是转向架安全通过曲线的一个重要性能指标,对转向架悬挂参数设计具有重要指导意义。南车株机公司在实施"走出去"的战略中,首次将转动因子试验在出口新加坡电力蓄电池双能源工程车上进行了应用,并逐步推广,对国内轨道交通技术的发展起到了很好的推动作用。     

非线性减振器的数学模型和参数辨识

介绍了非线性减振器的工作机理和对非线性减振器的研究及发展现状 ,分析了几种数学模型和参数辨识的方法。     

渐变刚度钢板弹簧的计算方法

本文对渐变刚度钢板弹簧作了较为深入的研究，并建立了普遍实用的设计计算方法。     

Analytical extension of the effective axle characteristics concept for the development of a structured chassis design process

The lateral vehicle dynamics is defined by the effects of side forces at the front and rear axle. These forces are caused by the slip and camber angle at the individual tyres, which are results of the kinematics and compliances of the chassis. This paper extends the approach of the effective axle characteristics by Paceyka to the analytical expression of the axle cornering stiffness and the axle relaxation behaviour with the aim of the development of a chassis design process as it applies in the early design stage. The obtained expression is integrated into a single track model and validated against a full nonlinear two-track model. By this means of these analytical expressions for the axle cornering stiffness and the axle relaxation behaviour it is possible to directly calculate and analyse the effective slip angles for linear quasi-static and dynamic driving manoeuvres.     

A locomotive–track coupled vertical dynamics model with gear transmissions

A gear transmission system is a key element in a locomotive for the transmission of traction or braking forces between the motor and the wheel–rail interface. Its dynamic performance has a direct effect on the operational reliability of the locomotive and its components. This paper proposes a comprehensive locomotive–track coupled vertical dynamics model, in which the locomotive is driven by axle-hung motors. In this coupled dynamics model, the dynamic interactions between the gear transmission system and the other components, e.g. motor and wheelset, are considered based on the detailed analysis of its structural properties and working mechanism. Thus, the mechanical transmission system for power delivery from the motor to the wheelset via gear transmission is coupled with a traditional locomotive–track dynamics system via the wheel–rail contact interface and the gear mesh interface. This developed dynamics model enables investigations of the dynamic performance of the entire dynamics system under the excitations from the wheel–rail contact interface and/or the gear mesh interface. Dynamic interactions are demonstrated by numerical simulations using this dynamics model. The results indicate that both of the excitations from the wheel–rail contact interface and the gear mesh interface have a significant effect on the dynamic responses of the components in this coupled dynamics system.