3212 超音波法による車輪フランジ接触面形状測定の試み(OS4-2 摩耗の予測・測定,OS4 接触問題とトライボロジ,オーガナイズド・セッション(OS))

概要

論文の詳細を見る
The investigation of contact patch in a wheel flange/rail gauge corner contact is essential information required to understand the mechanisms of flange climb derailment, wear and squealing noise. The purpose of this study is to determine a wheel flange/rail gauge corner contact patch using ultrasound. The wheel flange/rail gauge corner contact patch was measured under several conditions with the focus placed on normal force and angle of attack. The contact ellipse measured by ultrasound is smaller than that measured by the pressure indicating film. The area of contact ellipse increases with the increase of normal force and is uninfluenced with the increase of angle of attack. In the contact ellipse, the increase rate of the long axis is larger than that of the short axis. The gap between longitudinal position of contact ellipse centre and that of wheel axle centre, which is almost zero in the case of no angle of attack, increases with the increase of angle of attack.
2011-12-06