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Numerical simulation of shoegear-rail coupling vibration under different initial contact forces
Tong Xing1, Peihuo Peng2, Like Pan3
1Standards & Metrology Research Institute, China Academy of Railway Sciences Corporation Limited, Beijing, 100015, China.
Scientific Reports
|March 23, 2024
Summary
Lower initial contact force in urban rail transit
Area of Science:
- Urban rail transit engineering
- Mechanical vibrations
- Contact mechanics
Background:
- Conductor rail power supplies are crucial for urban rail transit.
- Understanding shoegear-rail system dynamics is vital for train performance and safety.
Purpose of the Study:
- To establish a coupled model of the shoegear-rail system.
- To investigate the dynamic performance under varying initial contact forces.
Main Methods:
- Developed a coupled model of the shoegear-rail system.
- Performed numerical simulations with different initial contact forces (70-160 N).
Main Results:
- Increased initial contact force led to higher vibration amplitude in electric shoegear.
- Higher initial contact force also increased contact force fluctuation.
- Maximum absolute shear force on the conductor rail decreased with higher initial contact force.
Conclusions:
- Lower initial contact force generally improves the performance of the shoegear-rail system.
- Findings suggest optimal initial contact force ranges for enhanced safety and efficiency.
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