Calibration for discrete element modelling of railway ballast: A review
The discrete element method (DEM) has been confirmed as an effective numerical method
for modelling railway ballast, and successfully used to analyse a wide range of ballast …
for modelling railway ballast, and successfully used to analyse a wide range of ballast …
State-of-the-art review of ground penetrating radar (GPR) applications for railway ballast inspection
In the past 20 years, many studies have been performed on ballast layer inspection and
condition evaluation with ground penetrating radar (GPR). GPR is a non-destructive means …
condition evaluation with ground penetrating radar (GPR). GPR is a non-destructive means …
[HTML][HTML] Numerical analysis of train-track-subgrade dynamic performance with crumb rubber in ballast layer
Crumb rubber (CR) has been proposed to apply in the ballast or sub-ballast layer for ballast
degradation mitigation and vibration (noise) reduction. The CR can change the ballast layer …
degradation mitigation and vibration (noise) reduction. The CR can change the ballast layer …
Rheology study of ballast-sleeper interaction with particle image Velocimetry (PIV) and discrete element modelling (DEM)
Ballast rheology is a phenomenon that describes movements of ballast particles due to the
discrete nature, which eventually leads to the ballast bed fluid deformation after a long-time …
discrete nature, which eventually leads to the ballast bed fluid deformation after a long-time …
Effect of distributed support of rail pad on vertical vehicle-track interactions
X Ge, L Ling, X Yuan, K Wang - Construction and Building Materials, 2020 - Elsevier
Rail pads are important components in railway tracks that greatly influence the vehicle-track
interactions. A vehicle-track vertically coupled dynamics model that considers the distributed …
interactions. A vehicle-track vertically coupled dynamics model that considers the distributed …
Coupled DEM-FEM methods for analyzing contact stress between railway ballast and subgrade considering real particle shape characteristic
J Xiao, L Xue, D Zhang, S Sun, Y Bai, J Shi - Computers and Geotechnics, 2023 - Elsevier
To investigate the stress concentration at the interface between crushed ballast and soil
subgrade, this study developed a coupling program of discrete element method (DEM) and …
subgrade, this study developed a coupling program of discrete element method (DEM) and …
[HTML][HTML] Three-dimensional vehicle-ballasted track-subgrade interaction: Model construction and numerical analysis
In this work a three-dimensional vehicle-ballasted track-subgrade interaction model is
developed, where the vehicle is modeled as a multi-rigid-body system, the track-subgrade …
developed, where the vehicle is modeled as a multi-rigid-body system, the track-subgrade …
Discrete element modelling of rubber-protected ballast performance subjected to direct shear test and cyclic loading
The rubber-protected ballast (RPB) is made from natural ballast particles and crumb rubber
particles. The crumb rubber is shredded waste tires. RPB was chosen to replace the ballast …
particles. The crumb rubber is shredded waste tires. RPB was chosen to replace the ballast …
Discrete element analysis of shape effect on the shear behaviors of ballast
W Hou, A Li, W Song - Scientific Reports, 2023 - nature.com
Railway ballast layer is an indispensable component of railway transport. Ballast
morphology plays an important effect in ballast-sleeper interaction and the durability of …
morphology plays an important effect in ballast-sleeper interaction and the durability of …
Analysis of railway ballasted track stiffness and behavior with a hybrid discrete–continuum approach
Railway ballasted track stiffness is an important indicator to identify supporting condition that
ensures that the facility is well designed and functioned. Although many studies have been …
ensures that the facility is well designed and functioned. Although many studies have been …