ANALYSIS ON WHEEL-RAIL MATCHING CHARASTERISTICS OF HIGH-SPEED RAILWAY
To improve the wheel-rail relationship of high-speed EMUs due to the deterioration of wheel treads central hollow wear, wheel-rail matching characteristics of various treads were analyzed. Due to the loss of gravity stiffness restoring force, the wheel/rail creep increases and the bad contact become...
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| Language: | zho |
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Editorial Office of Journal of Mechanical Strength
2022-01-01
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| Series: | Jixie qiangdu |
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| Online Access: | http://www.jxqd.net.cn/thesisDetails#10.16579/j.issn.1001.9669.2022.05.037 |
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| author | YI MeiLing |
| author_facet | YI MeiLing |
| author_sort | YI MeiLing |
| collection | DOAJ |
| description | To improve the wheel-rail relationship of high-speed EMUs due to the deterioration of wheel treads central hollow wear, wheel-rail matching characteristics of various treads were analyzed. Due to the loss of gravity stiffness restoring force, the wheel/rail creep increases and the bad contact becomes more and more severe. The matching relations of LMA, S1002 G, XP55 and typical hollow-worn profile were compared. It was found that the selection of profile should reasonably match the suspension characteristics of bogies. The larger contact spot area of LMA and the rail contact point close to the rail top is easier to form the conformal contact, which is not conducive to the delay of hollow-worn. The equivalent conicity of S1002 G and the position of the contact points change nonlinearly in the narrower scope, which is harmful to uniform wear; the peak of the contact spot area at the nominal rolling circle position of the wheel tread is easy to form the concentrated abrasion. XP55 maintains a（near） linear change in the equivalent conicity and contact spot area, and the initial rail contact position close to the rail gauge corner of 7 mm is benefit to overcome the conformal contact on the rail top. XP55 can be used for reference to optimize high-speed wheel-rail matching relationship. |
| format | Article |
| id | doaj-art-f5148cd31d5a4bd1909c2a436c0f137e |
| institution | Kabale University |
| issn | 1001-9669 |
| language | zho |
| publishDate | 2022-01-01 |
| publisher | Editorial Office of Journal of Mechanical Strength |
| record_format | Article |
| series | Jixie qiangdu |
| spelling | doaj-art-f5148cd31d5a4bd1909c2a436c0f137e2025-01-15T02:39:36ZzhoEditorial Office of Journal of Mechanical StrengthJixie qiangdu1001-96692022-01-01441266127031951657ANALYSIS ON WHEEL-RAIL MATCHING CHARASTERISTICS OF HIGH-SPEED RAILWAYYI MeiLingTo improve the wheel-rail relationship of high-speed EMUs due to the deterioration of wheel treads central hollow wear, wheel-rail matching characteristics of various treads were analyzed. Due to the loss of gravity stiffness restoring force, the wheel/rail creep increases and the bad contact becomes more and more severe. The matching relations of LMA, S1002 G, XP55 and typical hollow-worn profile were compared. It was found that the selection of profile should reasonably match the suspension characteristics of bogies. The larger contact spot area of LMA and the rail contact point close to the rail top is easier to form the conformal contact, which is not conducive to the delay of hollow-worn. The equivalent conicity of S1002 G and the position of the contact points change nonlinearly in the narrower scope, which is harmful to uniform wear; the peak of the contact spot area at the nominal rolling circle position of the wheel tread is easy to form the concentrated abrasion. XP55 maintains a（near） linear change in the equivalent conicity and contact spot area, and the initial rail contact position close to the rail gauge corner of 7 mm is benefit to overcome the conformal contact on the rail top. XP55 can be used for reference to optimize high-speed wheel-rail matching relationship.http://www.jxqd.net.cn/thesisDetails#10.16579/j.issn.1001.9669.2022.05.037Wheel-rail matchingHigh-speed railwayHollow-worn wheelEquivalent conicityRoll radii differenceWheel-rail contact |
| spellingShingle | YI MeiLing ANALYSIS ON WHEEL-RAIL MATCHING CHARASTERISTICS OF HIGH-SPEED RAILWAY Jixie qiangdu Wheel-rail matching High-speed railway Hollow-worn wheel Equivalent conicity Roll radii difference Wheel-rail contact |
| title | ANALYSIS ON WHEEL-RAIL MATCHING CHARASTERISTICS OF HIGH-SPEED RAILWAY |
| title_full | ANALYSIS ON WHEEL-RAIL MATCHING CHARASTERISTICS OF HIGH-SPEED RAILWAY |
| title_fullStr | ANALYSIS ON WHEEL-RAIL MATCHING CHARASTERISTICS OF HIGH-SPEED RAILWAY |
| title_full_unstemmed | ANALYSIS ON WHEEL-RAIL MATCHING CHARASTERISTICS OF HIGH-SPEED RAILWAY |
| title_short | ANALYSIS ON WHEEL-RAIL MATCHING CHARASTERISTICS OF HIGH-SPEED RAILWAY |
| title_sort | analysis on wheel rail matching charasteristics of high speed railway |
| topic | Wheel-rail matching High-speed railway Hollow-worn wheel Equivalent conicity Roll radii difference Wheel-rail contact |
| url | http://www.jxqd.net.cn/thesisDetails#10.16579/j.issn.1001.9669.2022.05.037 |
| work_keys_str_mv | AT yimeiling analysisonwheelrailmatchingcharasteristicsofhighspeedrailway |