2307 車輪フランジ部の微小凹凸と接線力に関する基礎的研究(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))

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This paper presents the laboratory experimental result carried out in order to investigate the relation of a tangent force between a wheel flange and a rail under the conditions of different environmental temperature and relative humidity. In the experiment, we used two types of cylinder test specimens (The type which has fine unevenness on a contact surface, and the type which is not.) assuming an actual wheel and an actual rail, and investigated the relation of tangent force and the existence of unevenness of a contact surface under the conditions of different environmental temperature and relative humidity. Consequently, under the conditions which do not have fine unevenness on the contact surface of a test specimen, it turned out that there is a tendency for a tangent force to become less on condition of 60% over of environment in relative humidity, regardless of room temperature. However, on the conditions which have fine unevenness on the contact surface of a test specimen, we could not observe the affect of room temperature and relative humidity.
2010-12-01