Results 1 to 10 of about 7,233 (223)

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

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

Research on shear fracture behavior of bolt and design method for retractable coupler [PDF]

Scientific Reports
To ensure the coupler’s adequate retraction in rail vehicle collisions, this study systematically investigates the shear fracture behavior of bolts, focusing on the effects of geometric parameters and loading dynamics.
Haoxu Ding, Tao Zhu, Long Yang, Xiaorui Wang, Bing Yang, Shoune Xiao, Yi Yang, Yanwen Liu   +7 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

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

Rail vehicles recycling [PDF]

WIT Transactions on The Built Environment, 2014
Manufacturers and owners of rolling stock must allow for ecological aspects when conducting their activities. One of the possibilities of reducing the negative impact of rolling stock on the environment is the proper disposal of the end-of-life rolling stock.
openaire   +1 more source

SIMULATION DYNAMIC PROCESSES OF RAIL VEHICLE AND RAIL WITH IRREGULARITIES [PDF]

Journal of KONES. Powertrain and Transport, 2014
The work presents research of defective railway wheel and rail dynamics and mathematical model of system “Railway vehicle wheel – track”. An assumption was made that the Rail R–65 and railway wheel with flats are with unevenness. The aim of this investigation is to identify the contact forces resulting from the wheel/rail contact at the various defects.
Bogdevičius, Marijonas, Žygienė, Rasa
openaire   +2 more sources

Running Dynamics of Rail Vehicles

Energies, 2022
The importance of simulation calculations in developing railway vehicles and their subsystems is consistently growing compared to physical experiments and track tests [...]
Jan Kalivoda, Larysa Neduzha
openaire   +3 more sources