Simplified Model of Elastic-Plastic Wheel/Rail Interactions
The results of numerical calculations, presented in the paper [1], demonstrate a significant role of plastic yield in the process of formation of the rail corrugations. Below, certain analytical solutions for a simplified model of wheel/rail interaction process are given. At first, normal and tange...
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| Format: | Article |
| Language: | English |
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Institute of Fundamental Technological Research
1994-07-01
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| Series: | Engineering Transactions |
| Online Access: | https://et.ippt.pan.pl/index.php/et/article/view/1530 |
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| author | W. Gambin |
| author_facet | W. Gambin |
| author_sort | W. Gambin |
| collection | DOAJ |
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The results of numerical calculations, presented in the paper [1], demonstrate a significant role of plastic yield in the process of formation of the rail corrugations. Below, certain analytical solutions for a simplified model of wheel/rail interaction process are given. At first, normal and tangent loads of rails, assumed on the basis of the results presented in the paper [2], are analyzed. The corresponding elastic stress field is given in explicit form. Next, a complete solution for a thin, plastic surface layer of rail is proposed. The simple analytical expressions enable us to calculate the changes of the limit shear stress and residual stresses under the wheel/rail contact surface after successive passings of a wheel. Two cases are considered: a load moving with constant amplitude and a load moving with cyclically changing amplitude. Two important facts are proved. The first one – that the limit shear stress (K) and the longitudinal residual stress (R) under the running surface of rail converge to asymptotic values. The second one – that the final location of K peaks and R valleys corresponds to the positions of rail corrugations.
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| format | Article |
| id | doaj-art-f8348d05e3764e5ca4114bb70ee80a8c |
| institution | Matheson Library |
| issn | 0867-888X 2450-8071 |
| language | English |
| publishDate | 1994-07-01 |
| publisher | Institute of Fundamental Technological Research |
| record_format | Article |
| series | Engineering Transactions |
| spelling | doaj-art-f8348d05e3764e5ca4114bb70ee80a8c2025-07-11T04:55:45ZengInstitute of Fundamental Technological ResearchEngineering Transactions0867-888X2450-80711994-07-01421-2Simplified Model of Elastic-Plastic Wheel/Rail InteractionsW. Gambin0Polish Academy of Sciences, Institute of Fundamental Technological Research, Warszawa The results of numerical calculations, presented in the paper [1], demonstrate a significant role of plastic yield in the process of formation of the rail corrugations. Below, certain analytical solutions for a simplified model of wheel/rail interaction process are given. At first, normal and tangent loads of rails, assumed on the basis of the results presented in the paper [2], are analyzed. The corresponding elastic stress field is given in explicit form. Next, a complete solution for a thin, plastic surface layer of rail is proposed. The simple analytical expressions enable us to calculate the changes of the limit shear stress and residual stresses under the wheel/rail contact surface after successive passings of a wheel. Two cases are considered: a load moving with constant amplitude and a load moving with cyclically changing amplitude. Two important facts are proved. The first one – that the limit shear stress (K) and the longitudinal residual stress (R) under the running surface of rail converge to asymptotic values. The second one – that the final location of K peaks and R valleys corresponds to the positions of rail corrugations. https://et.ippt.pan.pl/index.php/et/article/view/1530 |
| spellingShingle | W. Gambin Simplified Model of Elastic-Plastic Wheel/Rail Interactions Engineering Transactions |
| title | Simplified Model of Elastic-Plastic Wheel/Rail Interactions |
| title_full | Simplified Model of Elastic-Plastic Wheel/Rail Interactions |
| title_fullStr | Simplified Model of Elastic-Plastic Wheel/Rail Interactions |
| title_full_unstemmed | Simplified Model of Elastic-Plastic Wheel/Rail Interactions |
| title_short | Simplified Model of Elastic-Plastic Wheel/Rail Interactions |
| title_sort | simplified model of elastic plastic wheel rail interactions |
| url | https://et.ippt.pan.pl/index.php/et/article/view/1530 |
| work_keys_str_mv | AT wgambin simplifiedmodelofelasticplasticwheelrailinteractions |