摩擦系數(shù)對(duì)薄輪緣車輪通過曲線段磨耗的影響

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中圖分類號(hào)：U211.5 文獻(xiàn)標(biāo)志碼：A 文章編號(hào)：2095-2945（2025）21-0019-06

Abstract：Thin-rimwhelshavebecomethemain formoftrainwheels.Inorder toreduceitswearoncurvedsections，the efectofcurvedraillubricationonwhelwearwasstudied.Byestablishingavehicle-trackcoupleddynamicmodel，thwear lawsof wornwhelsunderdiferentcurveradiiandtrackbottomslopesareanalyzedwhen thewhee-railfrictioncoefficentsare changed.Theresultsshowthatthewhee-railcontactperformancedecreasesafterwearing，andthecontactcharacteristicsarethe worstwhenmatchingthewornwhel-newtrack，butthemaximumvaluesofderalmentcoeffcientandwheelweightreduction rate decrease by 57.9%and 9.4% respectively，indicating that trains with thin rims are more difficult to derail when crossing curves.Reducingthewhee-railfrictioncoeffientcanefectivelyreduceweelwear，andthesmallrthecurveradius，themore obvioustheefect，whiletherailbotomslopehaslessinfluenceonthewearindexAsymmetriclubricationcontrolofinnerand outerrailsismoreconducivetofrictionreduction.Whenthefrictioncoeficientoftheinnerrailisfixed，thewearindexofthe inerandouterwheelsdecreasesasthefrictioncoefcientoftheouterraildecreases，andthefrictionreductionrateoftheouter wheelsisfaster.Whenthewheel-railfrictioncoeficientdropstoO.1，thewheelfatiguefactorislessthanO，andsurfacfatigue isnoteasytoocur.Basedonthesimulationresults，measuressuchasasymmetricfrictioncontrolorreducingthewhel-rail frictioncoeffcienttoO.1arerecommendedtoreducerimwearandextendwheelfe，providingtheoreticalreferenceandbasis for improving economy.

Keywords：rimwear;whee-rail matching；whel-rail lubrication；wear index；fatigue factor;wear-reducingmeasures

車輪輪緣異常磨耗是高速列車運(yùn)行中的常見問題，影響輪軌接觸特性及運(yùn)行安全性和穩(wěn)定性。（剩余6611字）