Article
Computer Science, Interdisciplinary Applications
Yongdou Liu, Pedro A. Montenegro, Quan Gu, Wei Guo, Rui Calcada, Joao Pombo
Summary: A novel 3D WRI element has been developed to simulate the interaction between fast-moving wheel nodes and rail nodes, allowing for study of both vehicle behaviors and structural behaviors with any degree of complexity within a FEM framework. The element shows improved compatibility and efficiency in calculating wheel-rail contact geometry and has been verified for accuracy and capability in dynamic simulation of vehicle-track systems.
COMPUTERS & STRUCTURES
(2021)
Article
Engineering, Civil
Quan Gu, Jinghao Pan, Yongdou Liu
Summary: This paper highlights the importance of consistent tangent stiffness in achieving quadratic convergence rate in solving nonlinear equations of motion. The derived consistent tangent stiffness for the WRI element has been successfully implemented in FE software framework and shown to improve computational efficiency. Application examples of wheelset and light rail vehicle validate the effectiveness of the consistent tangent stiffness in delivering quadratic convergence rate.
INTERNATIONAL JOURNAL OF STRUCTURAL STABILITY AND DYNAMICS
(2021)
Article
Engineering, Mechanical
Lei Xu, Bin Zhu, Mansur Barhama Abulfathi, Yichen Meng
Summary: The study introduces a probabilistic model of track irregularities to select representative track irregularity sets with smaller samples. By effectively combining vehicle-track dynamics method and random simulation methods, the wheel and rail contact stresses can be efficiently quantified from a statistical view.
VEHICLE SYSTEM DYNAMICS
(2021)
Article
Engineering, Mechanical
Dexiang Ren, Gongquan Tao, Xiaoxuan Yang, Zefeng Wen, Xuesong Jin
Summary: Accurately estimating the wheel-rail dynamic interaction is crucial as it has a detrimental effect on the service life of vehicle and track components. By integrating dissipative contact force models into a validated vehicle-track coupled dynamics model, the energy dissipation at the wheel-rail interface can be considered. The Hu-Guo model is identified as the most suitable one for wheel-rail interaction analysis, which significantly reduces contact force fluctuation and has a phase lead at high frequencies above 1250 Hz.
VEHICLE SYSTEM DYNAMICS
(2022)
Article
Mechanics
Sandra Baltic, Werner Daves
Summary: This article investigates the development mechanism of the common squat-form crack in the railway track. It is found that the crack initiation occurs in the transverse plane and then expands into a typical squat shape in the longitudinal direction. The study also explores various factors that may trigger squat formation and analyzes the driving force and direction of crack growth using configurational force theory.
ENGINEERING FRACTURE MECHANICS
(2022)
Article
Engineering, Mechanical
Jinying Guo, Huailong Shi, Ren Luo, Jing Zeng
Summary: The study examines the stability and bifurcation characteristics under nonlinear wheel/rail contact, finding that an exponent fitting is more appropriate for simulating flange effects. It also discusses the significant impact of linear and nonlinear terms of rolling radius on bifurcation and critical speeds.
NONLINEAR DYNAMICS
(2021)
Article
Engineering, Mechanical
Tobias D. Carrigan, James P. Talbot
Summary: Railways need frequent inspection to maintain acceptable levels of rail roughness. This paper proposes a cost-effective method for near-continuous roughness monitoring using accelerometers mounted on in-service railway vehicles. The method addresses the variation in track support stiffness and wheel-to-wheel vibration coupling, and also considers the effect of wheel roughness on axle-box acceleration. The developments are evaluated through numerical simulation and measurement trials.
MECHANICAL SYSTEMS AND SIGNAL PROCESSING
(2023)
Article
Acoustics
Hongyu Tao, Pan Zhang
Summary: This paper investigates the characteristics of wheel-rail impact and proposes mitigation measures. A vehicle-track interaction model is built considering non-linear Hertz contact, and the wheel-rail impact force is characterized using continuous wavelet transform. The study reveals that the impact force exhibits four stages in the time domain and four characteristic frequencies correlated to track resonance modes in the frequency domain. Increasing railpad stiffness and damping can effectively reduce the impact force.
JOURNAL OF VIBRATION AND CONTROL
(2022)
Article
Construction & Building Technology
Jinghao Pan, Caigui Huang, Surong Huang, Quan Gu
Summary: This paper presents a machine learning method for obtaining the tangent stiffness of a complicated three-dimensional wheel-rail interaction element. The use of machine learning can improve computational efficiency and accuracy in vehicle-track simulations.
ADVANCES IN STRUCTURAL ENGINEERING
(2022)
Article
Engineering, Multidisciplinary
Pan Zhang, Jan Moraal, Zili Li
Summary: An innovative downsized test rig called V-Track has been constructed for wheel-rail contact experiments under impact loading conditions. The force measurement system named dynamometer was developed in V-Track to measure wheel-rail contact forces reliably and accurately. Experimental results show the dynamometer's capability in measuring these forces and achieving control of wheel-rail contact forces in V-Track.
Article
Transportation Science & Technology
Xin Zhao, Shuangchao Huang, Peng Zhang, Liang Ling, Jizhong Yang, Zefeng Wen
Summary: A transient wheel-rail rolling contact model and a vehicle-track coupled dynamics model were developed to calculate normal wheel-rail interactions at high frequencies in elasticity. The results of 180 cases showed significant differences in contact forces predicted by the CD model compared to the RC model, indicating the important role of ignored structural and wheel-rail flexibilities in high-frequency interactions. A modified non-linear Hertzian spring was developed to improve the accuracy of the CD model with reference to the RC predictions, providing insights for determination of contact spring and contact filter effect at high frequencies.
INTERNATIONAL JOURNAL OF RAIL TRANSPORTATION
(2022)
Article
Engineering, Mechanical
Yasin Sarikavak, Koichi Goda
Summary: This study evaluates the dynamic wheel/rail interactions of high-speed trains through actual measurements. It finds that high-speed trains at speeds over 200 km/h generate significant vertical impact loads on the railway system, which have important implications for train dynamics and running safety.
JOURNAL OF MECHANICAL SCIENCE AND TECHNOLOGY
(2022)
Article
Engineering, Mechanical
Gianluca Megna, Andrea Bracciali, Nirmal K. Mandal
Summary: Traditional insulated railway joints fail due to repeated shocks in the end post region, resulting in loss of insulation, cracks, and potential derailments. Laboratory tests are not sufficient to replicate impact loads. This paper introduces an innovative reinforced joint, ABJ, which is designed to prevent rail damage, impact noise, vibrations, and ballast deterioration. It can be installed on standard track and has an estimated infinite life. The paper presents the static and dynamic behavior, wheel-rail interaction, and partial full-scale validation of the ABJ.
Article
Chemistry, Multidisciplinary
Yanxin Gao, Gongde Zhang, Miaomiao Yuan, Jianyi Ji, Nannan Cui, Shiping Huang
Summary: This study investigates the factors influencing wheel-rail curve squeal noise, particularly focusing on stiffness matching. The results show that unstable modes closely align with the resonant frequency and mode shape of the wheel and rail, curve squeal noise primarily emanates from vibrations at the rim, railhead, and rail foot, and wheel and rail stiffness significantly affect squeal noise. Additionally, rail support stiffness plays a discernible role in controlling curve squeal noise.
APPLIED SCIENCES-BASEL
(2023)
Article
Engineering, Mechanical
Chen Shen, Xiangyun Deng, Zilong Wei, Rolf Dollevoet, Arjen Zoeteman, Zili Li
Summary: This paper compares the application of beam and continuum finite element models in wheel-rail impact problems, revealing differences through time-frequency analysis and parameter evaluation. Results show performance disparities between the two models at specific frequencies, and comparison with field observations demonstrates the greater accuracy of the continuum finite element model.
INTERNATIONAL JOURNAL OF MECHANICAL SCIENCES
(2021)
Article
Engineering, Civil
Xiaoyan Lei, Bin Zhang
JOURNAL OF TRANSPORTATION ENGINEERING
(2011)
Article
Acoustics
X. Lei, J. G. Rose
JOURNAL OF VIBRATION AND CONTROL
(2008)
Article
Acoustics
Xiaoyan Lei, Bin Zhang
JOURNAL OF VIBRATION AND CONTROL
(2011)
Article
Engineering, Civil
X. Lei, J. G. Rose
PROCEEDINGS OF THE INSTITUTION OF MECHANICAL ENGINEERS PART F-JOURNAL OF RAIL AND RAPID TRANSIT
(2008)
Review
Engineering, Civil
Xiaoyan Lei
PROCEEDINGS OF THE INSTITUTION OF MECHANICAL ENGINEERS PART F-JOURNAL OF RAIL AND RAPID TRANSIT
(2020)
Article
Engineering, Civil
Kun Luo, Xiaoyan Lei, Xinya Zhang
INTERNATIONAL JOURNAL OF STRUCTURAL STABILITY AND DYNAMICS
(2020)
Article
Engineering, Aerospace
Xiaoyan Lei, Zhenguo Wang, Kun Luo
Summary: The study utilized a similarity model based on the similarity law of elastic force to investigate low-frequency vibration problems of bridge structures. The vibration transmission characteristics of the model box girder and the influence of bridge support on vibration were analyzed through modal testing and numerical simulation. The results showed varying vibration attenuation patterns along the longitudinal direction of the bridge and the impact of support stiffness on vibration reduction effectiveness.
JOURNAL OF AEROSPACE ENGINEERING
(2021)
Article
Engineering, Civil
Qingsong Feng, Zhiye Liu, Jian Jiang, Xiaoyan Lei, Xiankui Wei
Summary: The study investigates the possibility of using rail vibration frequency to assess longitudinal temperature force on ballasted tracks and develops an empirical formula linking frequency index with various factors. The main findings highlight the linear relationship between modal frequency and temperature force, the suitability of peak frequency for continuous force assessment, and the potential deviation in results when using mid-span response frequency for temperature force detection in the expansion zone.
PROCEEDINGS OF THE INSTITUTION OF MECHANICAL ENGINEERS PART F-JOURNAL OF RAIL AND RAPID TRANSIT
(2022)
Article
Construction & Building Technology
Qingsong Feng, Kui Sun, Hua-Peng Chen, Xiaoyan Lei
Summary: This paper introduces a vehicle-ballastless track coupled model considering concrete cracks in high-speed railways, utilizing cracked Euler beam elements for modeling and proposing an iterative method to estimate fatigue crack growth. The crack-tip stress intensity factor and crack growth rate induced by high-speed vehicles are analyzed, providing theoretical guidance for routine maintenance of slab tracks.
CONSTRUCTION AND BUILDING MATERIALS
(2021)
Article
Acoustics
Kun Luo, Zhenguo Wang, Xiaoyan Lei
Summary: This study presents a computational technique based on cellular automata method and wave superposition principle for analyzing the sound radiation characteristics of arbitrary shape structures. Experimental verification showed the feasibility and effectiveness of the proposed method, which simplified modeling and improved calculation accuracy and efficiency compared to traditional methods.
Article
Engineering, Mechanical
Qingjie Liu, Xiaoyan Lei, Jerry G. Rose, Hua-Peng Chen, Qingsong Feng, Xinwei Luo
Summary: The Wavenumber Domain Method (WDM) developed in this paper accurately identifies vertical wheel-rail force waveform from monitoring data, showing its applicability through field tests and validation in vehicle-track coupled finite element models.
MECHANICAL SYSTEMS AND SIGNAL PROCESSING
(2021)
Article
Engineering, Civil
Qingsong Feng, Zhou Yang, Wenjie Guo, Jianfei Lu, Xiaoyan Lei, Jianwei Yan
Summary: This study analyzes the dispersion characteristics of box girder structures by developing a semi-analytical method based on the energy method. The method utilizes virtual springs to simulate Bloch boundaries, addressing the complexity of constructing displacement functions that satisfy the Bloch boundary conditions. By simplifying the box girder structure to a spatial plate coupling model and establishing a dispersion control equation, the propagation characteristics of elastic waves in the box girder are studied.
THIN-WALLED STRUCTURES
(2023)
Article
Transportation
Xiaoyan Lei
Summary: This study establishes a vertical dynamics model for high-speed train-track coupling system considering nonlinear wheel-rail contact and proposes a cross iteration method to solve the dynamics equations of the nonlinear coupling system. Using this model, four types of track irregularities (smooth track, track random irregularity, short-wave irregularity, and combined track random irregularity and short-wavelength irregularity) are analyzed for their effects on the vibration responses of the train and the track. The results show that the vehicle and the bogie passing frequencies are the main sources of excitation for the track vibration displacement and velocity, while the short-wave irregularity is the main source of excitation for the track vibration acceleration. The track random irregularity, short-wave irregularity, and sleeper spacing have significant influences on the wheel-rail force, wheelset and bogie vibration acceleration, while the car-body vibration acceleration is mainly affected by the track random irregularity.
TRANSPORTMETRICA B-TRANSPORT DYNAMICS
(2023)
Article
Acoustics
Kun Luo, Xiaoyan Lei, Kaikuan Ou
Summary: The study analyzed the influence of damping plates on structural vibration, noise, and the contribution of box girder bridge panels using model test and numerical calculation methods. The results showed that damping plates had a significant vibration reducing effect on the concrete box girder, while their noise reduction properties were less than ideal. The damping plates were helpful in effectively reducing the sound power contribution and the sound pressure contribution of the concrete panel.
JOURNAL OF LOW FREQUENCY NOISE VIBRATION AND ACTIVE CONTROL
(2021)
