铁道学报
鐵道學報
철도학보
Journal of the China Railway Society
2015年
9期
82-89
,共8页
陶功权%温泽峰%陆文教%金学松
陶功權%溫澤峰%陸文教%金學鬆
도공권%온택봉%륙문교%금학송
地铁车轮型面%轨底坡%滚动接触%接触应力%蠕滑力
地鐵車輪型麵%軌底坡%滾動接觸%接觸應力%蠕滑力
지철차륜형면%궤저파%곤동접촉%접촉응력%연활력
metro wheel profiles%rail cant%rolling contact%contact stress%creep force
为研究我国地铁车辆常用的 LM、S1002和 DIN5573型面与60 kg/m(CHN60)钢轨在不同轨底坡下的轮轨匹配关系,利用轮轨接触几何关系和轮轨非赫兹滚动接触理论,分析轨底坡对轮轨接触几何参数和轮轨接触力学特性的影响,从静力学分析的角度提出地铁车轮型面的最优轨底坡匹配。计算结果表明：1/20轨底坡下 LM型面最大接触压力、等效应力和剪切应力等参数远小于现行的1/40轨底坡,直线段最优轨底坡为1/20,曲线段采用1/40轨底坡利于车辆的曲线通过,降低轮轨磨耗；S1002型面最大接触压力、等效应力和剪切应力等参数随轨底坡的减小而减小,轨底坡为1/40时轮轨型面匹配较优；DIN5573型面在轨底坡小于1/25时轨底坡对轮轨接触特性的影响较小,轨底坡在1/40~1/30范围内轮轨型面匹配较优。
為研究我國地鐵車輛常用的 LM、S1002和 DIN5573型麵與60 kg/m(CHN60)鋼軌在不同軌底坡下的輪軌匹配關繫,利用輪軌接觸幾何關繫和輪軌非赫玆滾動接觸理論,分析軌底坡對輪軌接觸幾何參數和輪軌接觸力學特性的影響,從靜力學分析的角度提齣地鐵車輪型麵的最優軌底坡匹配。計算結果錶明：1/20軌底坡下 LM型麵最大接觸壓力、等效應力和剪切應力等參數遠小于現行的1/40軌底坡,直線段最優軌底坡為1/20,麯線段採用1/40軌底坡利于車輛的麯線通過,降低輪軌磨耗；S1002型麵最大接觸壓力、等效應力和剪切應力等參數隨軌底坡的減小而減小,軌底坡為1/40時輪軌型麵匹配較優；DIN5573型麵在軌底坡小于1/25時軌底坡對輪軌接觸特性的影響較小,軌底坡在1/40~1/30範圍內輪軌型麵匹配較優。
위연구아국지철차량상용적 LM、S1002화 DIN5573형면여60 kg/m(CHN60)강궤재불동궤저파하적륜궤필배관계,이용륜궤접촉궤하관계화륜궤비혁자곤동접촉이론,분석궤저파대륜궤접촉궤하삼수화륜궤접촉역학특성적영향,종정역학분석적각도제출지철차륜형면적최우궤저파필배。계산결과표명：1/20궤저파하 LM형면최대접촉압력、등효응력화전절응력등삼수원소우현행적1/40궤저파,직선단최우궤저파위1/20,곡선단채용1/40궤저파리우차량적곡선통과,강저륜궤마모；S1002형면최대접촉압력、등효응력화전절응력등삼수수궤저파적감소이감소,궤저파위1/40시륜궤형면필배교우；DIN5573형면재궤저파소우1/25시궤저파대륜궤접촉특성적영향교소,궤저파재1/40~1/30범위내륜궤형면필배교우。
To investigate the wheel-rail matching relationship between LM,S1002 and DIN5573 wheel profiles, which are mainly used in metro vehicles in China,and profile of 60 kg/m (CHN60)rail under different rail cant conditions,wheel-rail contact geometry relationship and wheel-rail non-Herzian rolling contact theory were used to analyze the effect of rail cant on wheel-rail contact geometry parameters and characteristics of wheel-rail con-tact mechanics to determine the optimum rail cant in order to match metro vehicle wheel profiles based on static contact analysis.The calculation results showed that the maximum contact pressure,equivalent stress and shear stress of LM wheel profile under the condition of rail cant of 1/20 were smaller than those under the rail cant of 1/40 currently used in China.For LM wheel profile,1/20 was the optimal rail cant for tangent tracks, while the rail cant of 1/40 was better for curve negotiating and for reducing wheel-rail wear.The maximum contact pressure,equivalent stress and shear stress of S1002 wheel profile decreased with the decrease of rail cant.The optimal matching of wheel-rail profiles was achieved when rail cant was 1/40 for S1002.For DIN5573 wheel profile,the rail cant had less influence on wheel-rail contact characteristics when it was smaller than 1/25.The rail cant ranging from 1/40 to 1/30 was optimal for wheel-rail profile matching.
