Problems with wheel and rail profiles selection and optimization

Zakharov, S. M.; Goryacheva, I. G.; Bogdanov, Victor; Pogorelov, Dmitry; Zharov, I. A.; Yazykov, Vladislav; Torskaya, E. V.; Soshenkov, Sergey

doi:10.1016/j.wear.2008.03.026

Cited by 26 publications

(10 citation statements)

References 8 publications

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“…The economical reprofiling strategy uses a method of changing the wheel flange shape to reduce the cutting depth of the wheel material, prolong the life of the wheelset and reduce repair costs [38]. The differences between a standard tread reprofiling strategy and an economical reprofiling strategy are shown in Fig.…”

Section: Contact Bandwidth Evaluation For Reprofiled Treadmentioning

confidence: 99%

Wheel–rail wear progression of high speed train with type S1002CN wheel treads

Gui

Dai

Gao

et al. 2015

Wear

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Section: Contact Bandwidth Evaluation For Reprofiled Treadmentioning

confidence: 99%

Wheel–rail wear progression of high speed train with type S1002CN wheel treads

Gui

Dai

Gao

et al. 2015

Wear

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“…Zhou et al (2010) [17] studied the preventive grinding of rail, probed into the locations and characteristics of rail damage, and proposed a preventive grinding optimization design scheme for rail based on empirical design method in consideration of the cyclic grinding quantity of rail grinder. Zakharov et al (2008) [18] summarized the principle of and hands-on experience in wheel-rail selection for Russian railways and introduced a wheel-rail profile evaluation and optimization method established based on rational and practical method. Modern railroad car system is normally designed with embedded track and channel rail.…”

Section: Introductionmentioning

confidence: 99%

Study on Rail Profile Optimization Based on the Nonlinear Relationship between Profile and Wear Rate

Wang¹,

Zhi-qiang²,

Chen³

et al. 2017

Mathematical Problems in Engineering

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This paper proposes a rail profile optimization method that takes account of wear rate within design cycle so as to minimize rail wear at the curve in heavy haul railway and extend the service life of rail. Taking rail wear rate as the object function, the vertical coordinate of rail profile at range optimization as independent variable, and the geometric characteristics and grinding depth of rail profile as constraint conditions, the support vector machine regression theory was used to fit the nonlinear relationship between rail profile and its wear rate. Then, the profile optimization model was built. Based on the optimization principle of genetic algorithm, the profile optimization model was solved to achieve the optimal rail profile. A multibody dynamics model was used to check the dynamic performance of carriage running on optimal rail profile. The result showed that the average relative error of support vector machine regression model remained less than 10% after a number of training processes. The dynamic performance of carriage running on optimized rail profile met the requirements on safety index and stability. The wear rate of optimized profile was lower than that of standard profile by 5.8%; the allowable carrying gross weight increased by 12.7%.

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“…Numerous papers were devoted to a redesign procedure aimed at the wear reduction for rail and wheel by generation of new profiles of contacting bodies [42][43][44]. Similarly, the o-ring seal shape optimization is important for infallible work of the o-ring seal construction [45].…”

Section: Introductionmentioning

confidence: 99%

Contact Optimization Problems for Stationary and Sliding Conditions

Páczelt

Baksa

Mróz

2015

Computational Methods in Applied Sciences

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The contact stress distribution is frequently not regular. It may contain singularities reducing the lifetime of machine elements. In order to eliminate such stress singularities, the application of contact pressure control is recommended in the contact conditions. In the paper, several classes of optimization problems are formulated for stationary and sliding contacts. Further, they are illustrated by specific examples. The relation to wear process is made as a natural way to attain the steady state contact profile satisfying the optimality conditions corresponding to minimization of the wear dissipation rate. It is assumed that the displacements and strains are small and the materials of the contacting bodies are elastic.

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Problems with wheel and rail profiles selection and optimization

Cited by 26 publications

References 8 publications

Wheel–rail wear progression of high speed train with type S1002CN wheel treads

Wheel–rail wear progression of high speed train with type S1002CN wheel treads

Study on Rail Profile Optimization Based on the Nonlinear Relationship between Profile and Wear Rate

Contact Optimization Problems for Stationary and Sliding Conditions

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