Results 1 to 10 of about 7,450 (117)

Research on geometric parameter quantification of rail rolling contact fatigue crack damage based on 2D optical image [PDF]

Scientific Reports
High-speed railway is a comprehensive carrier of high-technology. As an important infrastructure of high - speed rail tracks, rail breakage and derailment accidents caused by rail rolling contact fatigue crack damage are quite common.
Yu Wang, Bingrong Miao, Ying Zhang, Zhong Huang   +3 more
doaj   +2 more sources

Contact force identification in pantograph–catenary system via elastic support beam theory and enhanced l1 sparse regularization scheme [PDF]

Scientific Reports
Accurate identification of pantograph–catenary contact force remains a challenging inverse problem, particularly under high-speed operating conditions where high-frequency dynamics play a critical role.
Haifei Wei, Ning Zhou, Xingshuai Zhi, Hongming Chen, Mudi Li, Yao Cheng, Weihua Zhang   +6 more
doaj   +2 more sources

Analysis of the abnormal wear of the pantograph contact strip through combined experimental and simulation approaches [PDF]

Scientific Reports
The carbon contact strip of pantograph collects current from the overhead catenary to power the train, inevitably causing wear to the contact surface. This paper addresses the abnormal wear of the pantograph carbon contact strip, a challenged accident ...
Xingshuai Zhi, Ning Zhou, Haifei Wei, Hongming Chen, Yao Cheng, Yi Sun, Langtao Zhao, Guanhua Huang, Weihua Zhang   +8 more
doaj   +2 more sources

Vibration Analysis of Traction Drive System Components Based on the Field Test for High-Speed Train

Journal of Advanced Transportation, 2023
The traction drive system of a high-speed train is the key subsystem of a high-speed train, which controls the driving and braking of the train through electromechanical coupling, and determines the running speed, power quality, and comfort of the train.
Pingbo Wu, Chunyuan Song, Xun Wang, Sheng Qu, Hao Wu   +4 more
doaj   +1 more source

Passive safety features of a type 227M rail vehicle

Pojazdy Szynowe, 2021
The safety of passengers in rail transport is one of the most important aspects considered in the design and construction of rail vehicles. Maintaining low mortality statistics for this branch of transport requires the development of transport systems ...
Patryk Urbański, Dawid Gallas, Daniel Kołodziejek, Dawid Witkowski   +3 more
doaj   +1 more source

Method for Evaluating Bolt Competitive Failure Life Under Composite Excitation

Chinese Journal of Mechanical Engineering, 2023
In this study, the competitive failure mechanism of bolt loosening and fatigue is elucidated via competitive failure tests on bolts under composite excitation.
Guangwu Yang, Long Yang, Han Zhao, Haoxu Ding, Bing Yang, Shoune Xiao   +5 more
doaj   +1 more source

Effect of Personalized Ventilation in Seat Armrest on Diffusion Characteristics of Respiratory Pollutants in Train Carriages [PDF]

Journal of Applied Fluid Mechanics, 2023
As one of the most important means of transportation, high-speed trains have a large capacity for carrying passengers. However, their narrow carriages can easily exacerbate the spread of respiratory diseases.
X. Liu, T. Li, S. Wu, J. Zhang
doaj   +1 more source

Two material removal modes in chemical mechanical polishing: mechanical plowing vs. chemical bonding

Friction, 2023
With the rapid development of semiconductors, the number of materials needed to be polished sharply increases. The material properties vary significantly, posing challenges to chemical mechanical polishing (CMP).
Yuan Wu, Liang Jiang, Wenhui Li, Jiaxin Zheng, Yushan Chen, Linmao Qian   +5 more
doaj   +1 more source

Study on Lateral Vibration of Tail Coach for High-Speed Train under Unsteady Aerodynamic Loads

Vibration, 2023
As the speed of high-speed trains increases, the vehicle’s lateral stability steadily deteriorates. There have been observations of abnormal vibrations in the tail car, particularly on certain sections of the railway line.
Tian Li, Yifan Li, Lai Wei, Jiye Zhang
doaj   +1 more source

Structure failure analysis on metro axle-box hanger due to modal resonance with rail corrugation

Advances in Mechanical Engineering, 2023
During the long-term service of a metro vehicle, different kinds of fracture failure occur on the bogie, with the axle-box hanger being a representative one.
Wenbiao Huo, Pingbo Wu, Qunsheng Wang, Lai Wei, Kang Wang, Shidong Wu   +5 more
doaj   +1 more source