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迄今为止，曾将轮轨接触问题作为二维线性接触进行处理并研究了在各种接触表面条件下的牵引力特性。本文为了研究横向滑动或横向牵引对纵向牵引的影响，在水润滑、椭圆接触区的条件下进行了一些试验。在专用滚轮试验机上将一作用力垂直施加于滚动方向上，测量了纵向牵引力和滑动量。将试验获得的牵引系数和滑动率之间的关系与采用边界元进行的数值分析结果进行了对比，得出在水作为润滑剂的条件下，随着滚动速度的降低，试验结果接近数值分析结果，这与以前进行的线性接触试验和二维数值分析结果相同；当垂直于滚动方向的力增加时，最大牵引系数降低。通过数值分析可这样进行解释，因有横向力，而纵向牵引力降低，是由于接触面中滑动区域增加的缘故。
To date, wheel-rail contact problems have been dealt with as two-dimensional linear contacts and the traction behavior under various contact surface conditions has been investigated. In order to study the influence of transverse sliding or transverse traction on longitudinal traction, some experiments were carried out under the conditions of water lubrication and elliptical contact. A force was applied perpendicularly to the roll direction on a dedicated roller tester to measure the longitudinal traction and the amount of slip. The relationship between the traction coefficient and the sliding rate obtained by the experiment is compared with that of the numerical analysis using the boundary element method. It is found that with the decrease of the rolling speed, the experimental result is close to the numerical analysis under the condition of water as the lubricant , Which is the same as the previous linear contact test and two-dimensional numerical analysis. When the force perpendicular to the rolling direction increases, the maximum traction coefficient decreases. This can be explained by numerical analysis as a result of the lateral forces and the reduction of the longitudinal traction due to the increased sliding area in the contact area.