Results 101 to 110 of about 3,964 (223)

EMUs Pantograph Aerodynamics Experimental Research in Dropping Status under Strong Wind Condition

机车电传动, 2016
When EMUs run at a high speed, the pantograph would be affected by airflow and blown up in dropping status, which would result in catenary short-circuit fault. In order to evaluate the pantograph aerodynamics characteristics in dropping status and ensure
JIAO Wengen
doaj  

Scaling Laws for the Aeroacoustics of High Speed Trains [PDF]

, 2011
The present study focuses on the scaling of the main aeroacoustic sound sources of a high speed train. The investigations are carried out by measuring in a wind tunnel by means of microphone array technique.
Ehrenfried, Klaus, Lauterbach, Andreas, Loose, Sigfried, Wagner, Claus   +3 more
core  

Multi-parameter optimizations of elastic chain catenary based on response surface methodology for high-speed railway

Frontiers in Mechanical Engineering
As train operating speeds increase, the quality of pantograph-catenary current collection deteriorates, sometimes even resulting in contact loss. To ensure stable current collection during high-speed operation, it is crucial to optimize the design ...
Zongfang Zhang, Maoyou Zhang
doaj   +1 more source

Actuators for a space manipulator [PDF]

The robotic manipulator can be decomposed into distinct subsytems. One particular area of interest of mechanical subsystems is electromechanical actuators (or drives). A drive is defined as a motor with an appropriate transmission.
Brunson, P., Chun, W.
core   +1 more source

Flow-Induced Vibration Analysis by Simulating a High-Speed Train Pantograph

Applied Sciences
This paper investigates the aerodynamic behavior and dynamic characteristics of high-speed train pantographs under various operating conditions using advanced aerodynamic simulations and dynamic analyses.
Dongzhen Wang, Chengli Sun, Xiang Liu, Zekai Wang, Runze Li   +4 more
doaj   +1 more source

Models of MOS and SOS devices [PDF]

, 1980
Quarterly report describes progress in three programs: dc sputtering machine for aluminum and aluminum alloys; two dimensional computer modeling of MOS transistors; and development of computer techniques for calculating redistribution diffusion of ...
Gassaway, J. D., Mahmood, Q., Trotter, J. D.   +2 more
core   +1 more source

A simplified approach to determine aerodynamic damping of railway overheads [PDF]

, 2011
The railway overhead (or catenary) is the system of cables responsible for providing electric current to the train. This system has been reported as wind-sensitive (Scanlon et al., 2000), and particularly to the occurrence of galloping phenomena ...
Avila Sanchez, Sergio, López García, Oscar, Meseguer Ruiz, José   +2 more
core  

Condition monitoring of the rolling stock and infrastructure: results of a pilot project [PDF]

, 2016
The application of Prognostics and Health Monitoring (PHM) concepts in rail vehicles and railway infrastructure is a rapidly growing field of research, and extensive efforts are being spent with the aim of improving the reliability and availability of ...
Antonelli, Marco, Bruni, Stefano, Cangioli, Filippo, Carnevale, Marco, Chatterton, Steven, Desideri, Riccardo, Diana, Giorgio, Goracci, Claudio, Labbadia, Luca, Marinis, Dimitrios, Mazzola, Laura, Pennacchi, Paolo   +11 more
core  

Research on the Dynamic Response of the Catenary of the Co-Located Railway for Conventional/High Speed Trains in High-Wind Area

Infrastructures
To establish a theoretical foundation for assessing the dynamic performance of high-speed train catenary systems in wind-prone regions, this study develops a coupled pantograph–catenary model using ANSYS(2022R1) APDL.
Guanghui Li, Yongzhi Gou, Binqian Guo, Hongmei Li, Enfan Cao, Junjie Ma   +5 more
doaj   +1 more source

Soporte de catenaria rígida del túnel Sol-Nuevos Ministerios: modelado con elementos finitos y actualización con ensayos modales experimentales [PDF]

, 2016
La catenaria rígida presenta ciertas ventajas respecto a otros sistemas más convencionales de alimentación eléctrica en el transporte ferroviario. La tendencia a incrementar las velocidades de funcionamiento, crean la necesidad de optimizar el sistema ...
Almenara, Luis Fernando, Ania, Marcos, Postigo Pozo, Sergio, Simarro Vega, Montserrat, Simon-Mata, Antonio, Torrealba, David   +5 more
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