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David Zhou

Personal Information

Professor  
Supervisor of Doctorate Candidates  
Supervisor of Master's Candidates  

Main positions:Associate Professor

Other Post:世界交通运输大会(WTC)轨道交通学部轨道交通装备系统科学“机车车辆”技术委员会 联合主席

Journal Publications

A new wayside method for measuring and evaluating wheel-rail contact forces and positions

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Impact Factor:3.327

DOI number:10.1016/j.measurement.2020.108244

Journal:Measurement

Key Words:Wayside measurement method; Wheel-rail contact forces; Contact positions; Theoretical formulas; FEA; Strain gauge configuration

Abstract:Wheel-rail contact forces affect the safety, stability, economy and smooth running of the railway system. Measuring these forces and their positions remains a challenge due to the coupling interference of strain signals under multi-loading scenarios. This paper proposes a new wayside method to measure the magnitudes and positions of the lateral and vertical contact forces. Theoretical formulations for the contact forces and their positions with respect to the vertical strain sum and difference at rail web sides, are derived by the results of finite element analysis (FEA). A subtle strain gauge configuration is designed to measure the sum and difference of strains precisely. The robustness of the formulas is confirmed through extra FEA and the proposed method is validated by laboratory tests. The developed method provides an accurate and economic option for monitoring the wheel-rail contact status.

Note:JCR-Q1

Indexed by:Journal paper

Volume:166

Issue:108244

Translation or Not:no

Date of Publication:2020-06-07

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