Dynamic Monitoring and Evaluation Index of Metro Wheel Polygonal Wear
Journal Title: Urban Mass Transit - Year 2024, Vol 27, Issue 12
Abstract
［Objective］ Metro wheel polygonal wear causes vehicle vibration, affecting the smoothness and comfort of the vehicle operation. The existing static detection methods for wheel out-of-roundness consume a lot of manpower and material resources, a dynamically monitoring for the wheel polygonal wear severity is required. ［Method］ A dynamic simulation model of whole-vehicle rigidity and sub-rail foundation flexibility is established; a wheel polygonal order characteristic analysis method based on rail vibration acceleration is proposed; the wheel polygonal wear evaluation index is analyzed and verified based on measured data. ［Result & Conclusion］ The wheel polygonal degree index K is less affected by track irregularity and can quantitatively reflect the degree of wheel out-of-roundness; the wheel polygonal amplitude calculated based on the evaluation index K has better consistency with the actual wheel circumferential radial runout amplitude.
Authors and Affiliations
Hongxuan CHEN, Shengkuang MA, Gang SHEN, Daohong YU, Weiming WANG, Guangneng FAN
Keywords
Related Articles
- EP ID EP752743
- DOI 10.16037/j.1007-869x.2024.12.038
- Views 20
- Downloads 0
Wind-Vehicle-Bridge Coupling Simulation Analysis of Flexible Hanger Arch Bridge in Suspended Monorail Transit
［Objective］ Due to the characteristics of small structural stiffness and small width-span ratio of the track beam, the flexible hanger arch bridge in suspended monorail transit is vulnerable to wind loads, thus influen...
Simulation Research on Train Derailment and Collision Accident in Urban Rail Transit
Objective The process of a stainless steel train body derailment accident in urban rail transit in 2015 is simulated, reproducing the direct cause and process of the car body damage in the complex accident scene. Method...
Optimization of Grouting Reinforcement Mass Parameters for Shield Under-passing Buildings in Sandy Stratum
Objective Grouting reinforcement is a common measure to reduce disturbance on existing buildings during tunnel construction. It is essential to focus on the design of GRM (grouting reinforcement mass) parameters in the e...
Key Technologies and Application of Electro-hydraulic Sleeper Internal Locking Turnout Switch Machine
Objective Current commonly used EhsD (electro-hydraulic sleeper external locking turnout switch device) exhibits problems such as complex mechanical structure, high civil engineering requirements, numerous faults, and su...
Influence of Construction Deviations on Structural Dimensions and Vibration Reduction Performance of Steel Spring Floating Slabs
［Objective］ Construction deviation can affect project outcomes to varying degrees, making it necessary to study the impact of such deviations on the structural dimensions and vibration reduction performance of steel sp...