Mechanical characteristics of ballasted track under different tamping depths in railway maintenance
Transportation Geotechnics（2022）
Abstract
•A ballasted track model with large scale was constructed using DEM–MBD method.•A function module was developed to simulate tamping vibration.•Mechanical characteristics of sleeper and ballasts were analyzed.•Thresholds and optimal value of tamping depth were proposed.
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Key words
Tamping simulation,Tamping depth,Sleeper stress,Contact force,Ballast motion
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