2407 湿潤状態で低速におけるレール/車輪間の過渡的トラクション特性 : 諸因子の影響(OS9 接触問題とトライボロジ,OS9 接触問題とトライボロジ,TRANSLOG 2006)

概要

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An experimental study on the transient traction coefficient of wheel/rail contact under wet conditions has been carried out by means of a twin disc type of rolling-sliding frictional machine under the low slip ratio and low speed. It is shown that the traction coefficient has been affected by various parameters such as rolling speed, contact pressure, slip ratio, surface roughness and hardness. Consequently, the traction coefficient increased linearly and gradually at first and then became steady and finally slowly decreased as sliding distance increased under wet conditions. With increasing rolling speed, the traction coefficient decreased. However, the traction coefficient was not nearly changed by an increase in the contact pressure. With an increase in low slip ratio, the traction coefficient increased slowly and then became steady. Although sliding distance increased, visible adhesive wear has not arisen under water lubrication in the boundary lubrication regime.
2006-12-13