A5102019798- Railway Engineering and Dynamics
- Civil and Geotechnical Engineering Research
- Mechanical stress and fatigue analysis
- Gear and Bearing Dynamics Analysis
- Railway Systems and Energy Efficiency
- Brake Systems and Friction Analysis
- Aerodynamics and Fluid Dynamics Research
- Simulation and Modeling Applications
- Mechanical Engineering and Vibrations Research
- Vehicle Dynamics and Control Systems
- Structural Health Monitoring Techniques
- Industrial Technology and Control Systems
- Adhesion, Friction, and Surface Interactions
- Wind and Air Flow Studies
- Power Systems and Technologies
- Vibration Control and Rheological Fluids
- Magnetic Bearings and Levitation Dynamics
- Metal and Thin Film Mechanics
- Dynamics and Control of Mechanical Systems
- Diamond and Carbon-based Materials Research
- Geotechnical Engineering and Underground Structures
- Soil Mechanics and Vehicle Dynamics
- Structural Engineering and Vibration Analysis
- Vibration and Dynamic Analysis
- Aeolian processes and effects
Southwest Jiaotong University
2016-2025
Chongqing Jiaotong University
2022
Zhengzhou University of Light Industry
2012-2019
State Key Laboratory of Traction Power
2019
Sichuan University
2009
Inerters are widely used in structural vibration systems, but there is little research on their use the elastic-suspension of motors high-speed train bogies. The type motor suspension significantly influences its characteristics. To fill this gap, paper proposes frequency-variable characteristics inertia spring damping (ISD) structure. bogie dynamic model with inerter was established, and effect parameters stability system studied. Finally, inertia-suspension were optimized by Non-dominated...
As high-speed trains operate at a higher speed, the problem of rail wear is more serious. In this paper, new Gaussian function correction (GFC) method proposed to design profile, two parameters are introduced control removal area. Then train vehicle dynamic model established, Kriging surrogate (KSM) used reduce number simulations and Non dominated sorting genetic algorithm-II (NSGA-II) algorithm optimize profile. Finally, characteristics wheel/rail evolution optimized profile analyzed. The...
With the expansion of urbanisation, more and metro vehicles shuttle on dedicated railway lines, leading to serious wheel wear reduced passenger comfort, it is therefore interest design a profile that matches well with lines. This paper presents optimisation procedure consists 3 steps. Firstly, taking LM profile, which widely used in China vehicles, as an example, rotary-scaling fine-tuning (RSFT) method introduced generate large number candidate profiles. Secondly, quickly reliably establish...
Field test and computational fluid dynamics (CFD) method are conducted to investigate the safety of high-speed train under unsteady crosswind. Wheel–rail forces passing a breach between two windbreaks strong crosswind measured in field test. The derailment coefficient first wheelset front car at windward side reaches allowable value. Meanwhile, left right lateral wheel–rail force opposite direction. This kind phenomenon has not been tested before. Therefore, CFD multi-body simulations...
The wheel polygonisation is the harmonic wave along circumference, which has been widely reported in high-speed railway vehicles China recent years. polygonization mechanism not fully understood yet, and this work discusses one possible through several experiments. Firstly, a field test for CRH3 train with polygonal wheels carried out. It found that vibration vertical takes major responsibility, there are resonance bands train-track system. Another shows rail sensitive to characteristic...
AbstractThe rail side wear in small radius curved track of metro lines is a serious problem railway maintenance, which reduces the curve passing performance and shortens service life wheel rail. To improve vehicle's reduce wear, localized grinding profile design method for sharp curves was developed. The GFC generation used to generate profiles line. Then vehicle-track dynamic model established calculate contact parameters, objectives constraints. are optimized by KSM-PSO optimization...
Wheel hollow wear is a serious problem of high-speed electric multiple units (HSE). The wheel characteristics the CRH5 HSE are investigated using test data and simulation results. Then an dynamics model established. Two assessment indicators for proposed: simplification index contact fatigue index. Finally, some suppression measures proposed. calculated simply with strong engineering applicability. can effectively assess level different wear. For vehicle larger profile hardness, equivalent...
Abstract Since the view that localized rail third-order bending mode can cause high-order polygonization (mainly 18–23) of high-speed train wheels was put forward in 2017, many scholars have attempted to link a connection between modes and wheel phenomenon polygonal passing frequency. This paper first establishes flexible track model considering structural parametric characteristics fasteners, verifies by using vehicle tracking test data, then investigates influence fastener parameter...
High magnitude impact loads caused by polygonal wear of the wheels have been associated with in-service failures structural components high-speed railways, although mechanisms leading to wheels’ polygonalisation is not yet fully understood. In this study, a long-term field test programme undertaken and data are analysed gain better understanding growth in wear, its characteristics correlation axle box acceleration. The measurements on railway involved monitoring profiles between successive...
Wheel profile optimisation for variable gauge high-speed trains is required to ensure good vehicle operation performance with two rail gauges, therefore, there an urgent need further optimise the wheel of trains. This paper proposed IRSFT-KSM-NSGA-II method a new profile. Firstly, three-parameter improved rotary-scaling fine-tuning (IRSFT) generation was proposed. Then dynamic model train established, and clearance between bushings considered. The responses generated profiles are calculated...
This study addresses the issue of carbody hunting in an electric locomotive induced by low wheel-rail contact conicity. The main objective is to mitigate this unstable motion optimising location yaw dampers while ensuring bogie stability under high conicity conditions. A field test was first conducted observe behaviour, and a detailed dynamics model then developed validated using experimental data. impact damper locations on investigated, taking into consideration different modes. findings...