Use of measured accelerations from a passenger rail car to evaluate ride quality and track roughness - A case study [0.03%]
利用客轨车的实测加速度评估乘坐舒适性与轨道不平度的一个案例研究
Parisa Haji Abdulrazagh,Michael T Hendry,Mustafa Gül et al.
Parisa Haji Abdulrazagh et al.
Increasing traffic and speeds on passenger rail lines, and a short season for maintenance work, have motivated the industry to find new methods to assess the condition of existing infrastructure and determine where upgrades are required. In...
Reconstruction of an informative railway wheel defect signal from wheel-rail contact signals measured by multiple wayside sensors [0.03%]
基于多轨旁传感器的轮轨接触信号重构轮对缺陷 informative信号
Alireza Alemi,Francesco Corman,Yusong Pang et al.
Alireza Alemi et al.
Wheel impact load detectors are widespread railway systems used for measuring the wheel-rail contact force. They usually measure the rail strain and convert it to force in order to detect high impact forces and corresponding detrimental whe...
Automated processing of railway track deflection signals obtained from velocity and acceleration measurements [0.03%]
基于速度和加速度测量的轨道不平顺信号自动化处理方法研究
David Milne,Louis L Pen,David Thompson et al.
David Milne et al.
Measurements of low-frequency vibration are increasingly being used to assess the condition and performance of railway tracks. Displacements used to characterise the track movement under train loads are commonly obtained from velocity or ac...
Effect of wheel-rail interface parameters on contact stability in explicit finite element analysis [0.03%]
轮轨接触参数对显式动力分析接触稳定性能的影响研究
Yuewei Ma,Valeri L Markine,Abdul Ahad Mashal et al.
Yuewei Ma et al.
It is widely recognized that the accuracy of explicit finite element simulations is sensitive to the choice of interface parameters (i.e. contact stiffness/damping, mesh generation, etc.) and time step sizes. Yet, the effect of these interf...
A L Hickman,C J Baker,X Cai et al.
A L Hickman et al.
Air pollution from diesel emissions is becoming an increased international concern, and whilst attention has been primarily focused on the automotive industry, concerns have also been raised about emissions from diesel rail vehicles. This p...
Haoyu Wang,Valeri Markine,Xiangming Liu
Haoyu Wang
Transition zones in railway tracks are the locations with considerable changes in the vertical support structures. Due to the differential stiffness and settlement in the open track and the engineering structure resulting in the dynamic amp...
Improving the performance of finite element simulations on the wheel-rail interaction by using a coupling strategy [0.03%]
采用耦合策略提高轮轨相互作用有限元仿真计算效率
Yuewei Ma,Valeri L Markine,Abdul Ahad Mashal et al.
Yuewei Ma et al.
Over the past few years, a number of implicit/explicit finite element models have been introduced for the purpose of tackling the problems of wheel-rail interaction. Yet, most of those finite element models encounter common numerical diffic...
Improving the reliability and availability of railway track switching by analysing historical failure data and introducing functionally redundant subsystems [0.03%]
基于历史故障数据改进铁路道岔可靠性和可用性的研究
Samuel D Bemment,Roger M Goodall,Roger Dixon et al.
Samuel D Bemment et al.
Track switches are safety critical assets that not only provide flexibility to rail networks but also present single points of failure. Switch failures within dense-traffic passenger rail systems cause a disproportionate level of delay. Sub...
Behaviour of under sleeper pads at switches and crossings - Field measurements [0.03%]
岔区和交叉渡线区板下垫板的现场实测行为性能研究
Louis Le Pen,G Watson,A Hudson et al.
Louis Le Pen et al.
Major growth in rail traffic in many parts of the world in recent years has brought railway networks close to capacity and restricted the time available for track access to carry out maintenance work without costly temporary route closures....
Estimating the relative cost of track damage mechanisms: combining economic and engineering approaches [0.03%]
结合经济和工程方法估算轨道损伤机制的相对成本
Andrew Smith,Simon Iwnicki,Aniruddha Kaushal et al.
Andrew Smith et al.
This paper proposes a new, two-stage methodology to estimate the relative marginal cost of different types of vehicles running on the rail infrastructure. This information is important particularly where the infrastructure managers wish to ...