Results 71 to 80 of about 805,461 (159)
LubricantsTo investigate how severe wear at No. 12 turnout frogs in an urban rail transit line operating at speeds over 120 km/h on the dynamic performance of the vehicle, a vehicle–frog coupled dynamic model was established by employing the 2021 version of ...
Yanlei Li +4 more
doaj +1 more source
Grinding Management of Rail Profile Based on Abnormal Hunting of High-speed Train
机车电传动, 2020 To study the influence of the polished depth of rail profile at the gauge angle on the low-frequency vibration of high-speed train, a group of rail profiles were obtained by interpolating between the standard CN60 profile and the measured rail profile ...
Jingwei CHEN +3 more
doaj
Wheel-rail Contact Relation Based on Different Wheel Diameter
机车电传动, 2016 Aim at the wheel diameter difference problem, influence of wheel diameter on wheel-rail contact geometrical relationship, contact spot, the maximum contact stress, creepage, vehicle stability and wheel-rail abrasion was researched.
ZHANG Maosong, LI Fu, YANG Yang
doaj
Design of optimized tread profile for high-speed EMUs
机车电传动To address two significant issues in high-speed electric multiple units (EMU), i.e. degraded vehicle dynamic performance under existing wheel-rail interactions and increased wheel tread wear at elevated operating speeds, this paper proposes an optimized ...
SUN Weinan +5 more
doaj
, 2014 Being obesity is a common health problem in women. Obese women have fat deposited at upper body and waist. Due to a large amount of subcutaneous tissue deposit in the upper body and around the waist, the center of gravity had a tendency to fall in front ...
Vachalathiti, Roongtiwa +3 more
core
Test Study on Carbody Abnormal Vibration of High-speed EMUs
机车电传动, 2014 Carbody abnormal vibration analysis of a high-speed EMUs was researched, mainly containing the wheel tread measurements,carbody vibration on-line test, turn around running and vibration compared before and after repairing profile. The results showed that
WU Hui-chao, XU Yun, SHI Jun-jie
doaj
Hunting stability control of high-speed bogie based on active yaw damper
Journal of Low Frequency Noise, Vibration and Active ControlHunting stability is an inherent property of railway vehicles that determines the operational speed. This paper establishes a half-vehicle model with nonlinear wheel/rail equivalent conicity and interactive forces.
Rancheng Mao +3 more
doaj +1 more source
Methods for determination of the conicity tolerance
, 1997 Thesis (M.S.)--University of Oklahoma, 1997.Includes bibliographical references (leaves 84-89).This thesis attempts, for the first time, to develop comprehensive equations for determination of the conicity tolerance.
Chung, Sung Hun
core
Cause Analysis and Optimization of Subway Vehicles Lateral Stability Exceedance
Chengshi guidao jiaotong yanjiuObjectiveRail profile wear and wheel condition degradation during subway operation can lead to changes in the wheel-rail contact relationship, then resulting in obvious abnormal vehicle sway. This not only compromises ride comfort but also poses a latent
Qingwei SONG +5 more
doaj +1 more source
In-service Performance of Metro Vehicle Bogies Based on Line-tracking Tests
Chengshi guidao jiaotong yanjiu[Objective] With the continuous development of urban rail transit and the ongoing expansion of metro lines, the service environment for metro vehicle bogies is becoming increasingly complex.
YANG Liqiang, YANG Chen, LI Longtao
doaj +1 more source