共搜索到39481条信息,每页显示10条信息,共3949页。用时:0小时0分0秒449毫秒
J. Cent. South Univ. (2016) 23: 3018-3027 DOI: 10.1007/s11771-016-3365-9 Installation position determination of wind speed sensors on steel pole along a high-speed railway XIONG Xiao-hui(熊小慧)1, 2... and k-ε double equations turbulent model, the field flow around the wind speed sensor and the steel pole along a high-speed railway was simulated on an unstructured grid. The grid-independent......
brakes even in high speed region. Therefore, vehicle reduction effect can be expected by reducing parts related with an air brake which is not used frequently by using a pure electric brake in the M car...Wide speed range for traction motor in braking force of electric braking control systemYoung-Choon Kim1, 2, Moon-Taek Cho1, 2(1. Division of Mechanical and Automotive Engineering, College......
. It is especially suitable for the situation that one-step ahead forecasting precision is required to be high. (3) The two optimization algorithms have all used in Qinghai-Tibet railway strong wind speed... Railway Society, 2004, 26(4): 36-40. (in Chinese) [5] LI Yan-fei, LIANG Xi-feng, GAO Guang-jun, LIU Tang-hong. Influence of cross-wind on aerodynamic performances of high-speed container flat car......
is modeled. The height of embankment ranges from 1 m to 5 m and the wind barrier is 3 m high. The results show that the wind speed changes obviously before the wind barrier on the horizontal plane, which is 4.5 m high above the track. The speed of wind reduces gradually while approaching the wind barrier. It reaches the minimum value at a distance about 5 m before the wind barrier, and increases......
Introduction The catenary system, whose role is to supply power to electric high-speed locomotive, is erected along the railway on field and has no standby but bears long-term dynamic load such as natural... J. Cent. South Univ. (2018) 25: 1958-1965 DOI: https://doi.org/10.1007/s11771-018-3886-5 Fatigue life evaluation on key components of high-speed railway catenary system QI Guang-feng(戚广枫), XIAO......
, the Federal Railroad Administration (FRA) has investigated crashworthiness strategies and carried out research on the safety of high-speed passenger trains beginning in 1989 [6-8]. The main achievement... theory can be used to investigate the scaled collision tests, but with the increasing speed of trains, the required impact speed of the scaled test became high accordingly [78]. Figure 5 shows......
a critical factor influencing the safety, efficiency, and reliability of railway transport [1]. Considering expected further increases in the running speed of railway vehicles, the permissible... specification for electric locomotive [M]. Beijing, China: China Zhijian Publishing House, 2007. (in Chinese) [3] BS EN 14363: 2005. Railway applications-Testing for the acceptance of running......
J. Cent. South Univ. (2016) 23: 1535-1540 DOI: 10.1007/s11771-016-3205-y Equilibrium analysis of mixed passengers in urban railway network ZHANG Lu(张璐)1, WU Jian-jun(吴建军)1, SUN Hui-jun(孙会君)2 1... Central South University Press and Springer-Verlag Berlin Heidelberg 2016 Abstract: A model is proposed to describe the passengers’ route choice behaviors in urban railway traffic with stochastic link......
Effect of Alloying Additions on the Oxidation of High Speed Steels under Dry and Wet Conditions () 摘要:An investigation has been carried out into the effects of chromium and vanadium content on the oxidation rate and on the adhesion of oxide scales grown on three different chemical compositions of high speed steels under dry and wet conditions. The oxidation tests were carried out......
High Temperature Oxidation Behavior of High Speed Steel for Roll in Water Vapor LIU Fang1,ZHOU Li1,SUN Da-le2,LIU Chang-sheng1 (1.College of Material & Metallurgy, Northeastern University, Shenyang 110004, China;2.BAOSHAN Iron & Steel CO., LTD. Technology Center, Shanghai 201900, China) 摘要:The oxidation behavior of high speed steel (HSS) was researched by high temperature thermo balance......