Criteria for predicting the initiation of rolling contact fatigue damage in the railway wheels and rails

The development of the methods for modeling the processes of accumulation of the rolling contact fatigue damage and wear of the wheels of the railway rolling stock and the rails is particularly relevant due to the increase in the number of damage in the recent times. The work is underway to improve...

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Main Authors: V. I. Sakalo, A. V. Sakalo
Format: Article
Language:Russian
Published: Joint Stock Company «Railway Scientific and Research Institute» 2019-07-01
Series:Вестник Научно-исследовательского института железнодорожного транспорта
Subjects:
Online Access:https://www.journal-vniizht.ru/jour/article/view/310
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author V. I. Sakalo
A. V. Sakalo
author_facet V. I. Sakalo
A. V. Sakalo
author_sort V. I. Sakalo
collection DOAJ
description The development of the methods for modeling the processes of accumulation of the rolling contact fatigue damage and wear of the wheels of the railway rolling stock and the rails is particularly relevant due to the increase in the number of damage in the recent times. The work is underway to improve the chemical composition and the technology of production of the wheel and rail steels in order to improve their mechanical properties and ability to resist the action of the cyclic loads. The methods of modeling allow predict the possibility of initiation of the fatigue cracks during operation with the sufficient accuracy in the short time. The selection of the contact fatigue criterion and the mathematical apparatus for calculating the stresses at points in the area adjacent to the contact patch to obtain the numerical values of the criterion components is the most important task in the development of modeling methods. The article focuses on the approaches based on the Dang Van criterion and the shakedown diagram for a material undergoing to the action of cyclic loads, which are widely used to assess the rolling contact fatigue of the wheels and rails. The assumptions that are used in the development of the algorithms concerning the models of the contacting bodies, the shape of the contact patch, the distribution of the contact pressures and the tangential forces are considered. The approach using the criterion — the amplitude value of the maximal shear stress is also considered. The example of modeling the process of accumulation of the rolling contact fatigue damage in the wheel of the freight car is given. The results of modeling are presented in the form of the isolines of the criterion values and the accumulated damage in the area adjacent to the contact patch. This work was supported by the Russian Foundation for Basic Research under Grant [17-01-00815A].
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spelling doaj.art-82d524c5d80545959bbcd68a6023ccf42023-03-13T10:14:33ZrusJoint Stock Company «Railway Scientific and Research Institute»Вестник Научно-исследовательского института железнодорожного транспорта2223-97312713-25602019-07-0178314114810.21780/2223-9731-2019-78-3-141-148238Criteria for predicting the initiation of rolling contact fatigue damage in the railway wheels and railsV. I. Sakalo0A. V. Sakalo1Федеральное государственное бюджетное образовательное учреждение высшего образования «Брянский государственный технический университет» (ФГБОУ ВО БГТУ)Федеральное государственное бюджетное образовательное учреждение высшего образования «Брянский государственный технический университет» (ФГБОУ ВО БГТУ)The development of the methods for modeling the processes of accumulation of the rolling contact fatigue damage and wear of the wheels of the railway rolling stock and the rails is particularly relevant due to the increase in the number of damage in the recent times. The work is underway to improve the chemical composition and the technology of production of the wheel and rail steels in order to improve their mechanical properties and ability to resist the action of the cyclic loads. The methods of modeling allow predict the possibility of initiation of the fatigue cracks during operation with the sufficient accuracy in the short time. The selection of the contact fatigue criterion and the mathematical apparatus for calculating the stresses at points in the area adjacent to the contact patch to obtain the numerical values of the criterion components is the most important task in the development of modeling methods. The article focuses on the approaches based on the Dang Van criterion and the shakedown diagram for a material undergoing to the action of cyclic loads, which are widely used to assess the rolling contact fatigue of the wheels and rails. The assumptions that are used in the development of the algorithms concerning the models of the contacting bodies, the shape of the contact patch, the distribution of the contact pressures and the tangential forces are considered. The approach using the criterion — the amplitude value of the maximal shear stress is also considered. The example of modeling the process of accumulation of the rolling contact fatigue damage in the wheel of the freight car is given. The results of modeling are presented in the form of the isolines of the criterion values and the accumulated damage in the area adjacent to the contact patch. This work was supported by the Russian Foundation for Basic Research under Grant [17-01-00815A].https://www.journal-vniizht.ru/jour/article/view/310колесо железнодорожного подвижного составарельскритерий контактной усталостидиаграмма приспособляемости
spellingShingle V. I. Sakalo
A. V. Sakalo
Criteria for predicting the initiation of rolling contact fatigue damage in the railway wheels and rails
Вестник Научно-исследовательского института железнодорожного транспорта
колесо железнодорожного подвижного состава
рельс
критерий контактной усталости
диаграмма приспособляемости
title Criteria for predicting the initiation of rolling contact fatigue damage in the railway wheels and rails
title_full Criteria for predicting the initiation of rolling contact fatigue damage in the railway wheels and rails
title_fullStr Criteria for predicting the initiation of rolling contact fatigue damage in the railway wheels and rails
title_full_unstemmed Criteria for predicting the initiation of rolling contact fatigue damage in the railway wheels and rails
title_short Criteria for predicting the initiation of rolling contact fatigue damage in the railway wheels and rails
title_sort criteria for predicting the initiation of rolling contact fatigue damage in the railway wheels and rails
topic колесо железнодорожного подвижного состава
рельс
критерий контактной усталости
диаграмма приспособляемости
url https://www.journal-vniizht.ru/jour/article/view/310
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