コンタクトライダの一自由度モデルによる接触追従性と耐久性設計条件

抄録

This paper describes theoretical and experimental study of contact vibrations of a single-degree-of-freedom (1 DOF) contact slider and its design condition over a random wavy surface of a disk. First a simple formula of the perfect contact sliding condition over a sinusoidal wavy surface was derived theoretically and its validation was confirmed by numerical simulation. By using computer generated random surface fitted to the measured waviness of an actual disk, it was found that statistical characteristics of the contact vibrations of a spherical contact slider can be predicted well by the numerical simulation. The design conditions of a slider and surface waviness necessary for perfect contact sliding was derived analytically and its validity was shown by numerical simulation and experiment. The necessary conditions for wear durability under uniform contact pressure was also derived. Design chart of a contact slider and typical design examples were discussed in terms of both perfect contact sliding and wear durability conditions.