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Rotary-scaling fine-tuning (RSFT) method for optimizing railway wheel profiles and its application to a locomotive

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Railway Engineering Science 2020年第2期28卷 160-183页

作者： Yunguang Ye Yayun Qi Dachuan Shi Yu Sun Yichang Zhou markus hecht Institute of Land and Sea Transport Systems Technical University of Berlin10587 BerlinGermany State Key Laboratory of Traction Power Southwest Jiaotong UniversityChengdu 610331China College of Transportation Science and Engineering Nanjing Tech UniversityNanjing 210009China

The existing multi-objective wheel profile optimization methods mainly consist of three sub-modules:(1)wheel profile generation,(2)multi-body dynamics simulation,and(3)an optimization *** the first module,a comparably conservative rotary-scaling finetuning(RSFT)method,which introduces two design variables and an empirical formula,is proposed to fine-tune the traditional wheel profiles for improving their engineering *** the second module,for the TRAXX locomotives serving on the Blankenburg–Rubeland line,an optimization function representing the relationship between the wheel profile and the wheel–rail wear number is established based on Kriging surrogate model(KSM).For the third module,a method combining the regression capability of KSM with the iterative computing power of particle swarm optimization(PSO)is proposed to quickly and reliably implement the task of optimizing wheel ***,with the RSFT–KSM–PSO method,we propose two wear-resistant wheel profiles for the TRAXX locomotives serving on the Blankenburg–Rubeland line,namely S1002-S and *** S1002-S profile minimizes the total wear number by 30%,while the S1002-M profile makes the wear distribution more uniform through a proper sacrifice of the tread wear number,and the total wear number is reduced by 21%.The quasi-static and hunting stability tests further demonstrate that the profile designed by the RSFT–KSM–PSO method is promising for practical engineering applications.

关键词： Wheel profile optimization Wear reduction Rotary-scaling fine-tuning Particle swarm optimization Kriging surrogate model

Quantification of the influence of rolling stock failures on track deterioration

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Journal of Zhejiang University-Science A(Applied Physics & Engineering) 2020年第10期21卷 783-798页

作者： Yun-guang YE Da-chuan SHI Sara POVEDA-REYES markus hecht Institute of Land and Sea Transport Systems Technical University of BerlinBerlin 10587Germany AITEC Parque TecnoldgicoValencia 46980Spain

This study focuses on the quantification of the influence of rolling stock failures(RSFs)on railway *** the wheel flat,a common RSF,as an example,we introduce four quantification indexes to evaluate the influence on the following four deterioration mechanisms:track settlement(TS),track component fatigue(TCF),abrasive wear(AW),and rolling contact fatigue(RCF).Our results indicate that TS,TCF,and AW increase sharply with the increase of the wheel flat length and the vehicle speed,and this increasing trend becomes more acute with the increase of the wheel flat length and the vehicle *** low speeds,RCF increases gradually as the wheel flat length increases;at high speeds,it increases sharply at first and then decreases *** influence of the wheel flat on TCF and AW is the most obvious,followed by TS and *** findings can help infrastructure managers(IMs)to better understand infrastructure conditions related to RSFs and can aid them in managing problems with vehicle abnormality in track access charging.

关键词： Rolling stock failure(RSF) Track deterioration Quantification Track charging Wheel flat

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德国开发更安静、更轻型货车转向架

国外铁道车辆 2003年第3期40卷 13-15页

作者： markus hecht 祝华德

介绍了德国开发低噪声货车转向架的设计目的、方案选择和所采用的信息技术。

关键词：德国开发低噪声货车转向架设计方案选择信息技术

Erratum to:Quantification of the influence of rolling stock failures on track deterioration

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Journal of Zhejiang University-Science A(Applied Physics & Engineering) 2020年第11期21卷 938-938页

作者： Yun-guang YE Da-chuan SHI Sara POVEDA-REY ES markus hecht Institute of Land and Sea Transport Systems Technical University of BerlinBerlin 10587Germany AITEC Parque TecnologicoValencia 46980Spain

The original version of this article unfortunately contained a *** line 6,p.785,the data“0.06”should be“6.04×10^-6”,i.e.“The results showed that among these seven failures,the occurrence probabilities of the whe... 详细信息

关键词： wheel failures rolling