The tool for wheel profile wear research from the track composition point of view

The wear of rails and wheels is important problem in rail traffic. The change of the shape of the wheel profile has not only a great influence on the dynamic properties of the vehicle (like stability, safety by passing curved tracks, etc.), but also affects the ride comfort of passengers and environmental insults, in extreme cases it can cause rail derailment. One of the ways to predict these undesired conditions are computer aided simulation analyses. In this article are presented results of wheel profile wear by Archard wear law, when the vehicle of type Model A was driving in track by constant velocity of 30 m/s. The vehicle was traveling along track where the rail profile was defined by standard (UIC 60 profile) with cant of 1:40, or the track profile really measured on the track, the profile S 91700_16 with the cant of 1:20. Simulations were realized by SIMPACK software.

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Influence of Full-Life Cycle Wheel Profile on the Contact Performance of Wheel and Standard Fixed Frog in Heavy Haul Railway

Shock and Vibration ◽

10.1155/2020/8866692 ◽

2020 ◽

Vol 2020 ◽

pp. 1-12

Author(s):

He Ma ◽

Jinming Zhang ◽

Jun Zhang ◽

Tao Tao Jin ◽

Chun Yu Song

Keyword(s):

Contact Force ◽

Lateral Displacement ◽

Dynamic Interaction ◽

Von Mises Stress ◽

Static Contact ◽

Heavy Haul ◽

Wheel Profile ◽

Wheel Profile Wear ◽

Von Mises ◽

Heavy Haul Railway

Wheel wear is unavoidable, which affects the contact performance of the wheel and rail. This article explores the effects of wheel profile wear on the static contact and dynamic interaction between wheel and standard fixed frog in heavy haul railway. The coupling dynamic models of the vehicle-fixed frog system are established to calculate the change regulation of displacement, contact force, and acceleration when a vehicle passes through the standard fixed frog at a speed of 50 km/h in the facing move in the diverging line. Besides, the finite element models of wheel and standard fixed frog at key positions are developed to simulate the contact patch and distribution of von Mises stress in the regions of the wheel-fixed frog. Compared with the standard profile, the maximum lateral displacement of the worn profile can be reduced by up to 9 mm. The vertical contact force can be reduced from 750 kN to 320 kN, and the decrease is 57.3%. The von Mises stress could decrease up to 34% compared with the standard. And the results show that the wheel profile wear changes the positions of the wheel-rail contact points along the longitudinal direction and affects the dynamic interaction of vehicle and standard fixed frog. For the measured worn wheel profiles in this article, profile wear relieves the dynamic responses and it is good for the nose rail.

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Prediction model for wheel profile wear and rolling contact fatigue

Wear ◽

10.1016/j.wear.2010.10.028 ◽

2011 ◽

Vol 271 (1-2) ◽

pp. 210-217 ◽

Cited By ~ 62

Author(s):

B. Dirks ◽

R. Enblom

Keyword(s):

Prediction Model ◽

Rolling Contact Fatigue ◽

Contact Fatigue ◽

Rolling Contact ◽

Wheel Profile ◽

Wheel Profile Wear

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Effect of Wheel-Rail Contact Geometry Relationship on Vehicle Dynamic Performance

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.712-715.1541 ◽

2013 ◽

Vol 712-715 ◽

pp. 1541-1544

Author(s):

Yi Jia Wang ◽

Jing Zeng

Keyword(s):

High Speed ◽

Rapid Development ◽

Dynamic Performance ◽

Vehicle Dynamic ◽

Safe Operation ◽

Rail Wear ◽

Variation Characteristics ◽

Wheel Profile ◽

Wheel Profile Wear ◽

High Speed Vehicle

With the rapid development of high-speed railways, wheel and rail wear has become increasingly serious due to the acute wheel-rail interaction. During the operation of high speed vehicle, complicated wheel-rail contact force will lead to wheel profile wear, which will worsen the dynamic performance of vehicle system, or even influence the safe operation of vehicles. In order to ensure the vehicle dynamic performance, right now regularly wheel re-profiling has to be adopted. Therefore, the study of wheel profile wear and its effect on vehicle dynamic performance is very important [1,. The purpose of the paper is to study the variation characteristics of vehicle dynamic performance with respect to the wheel profile wear through numerical simulation and field test.

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