Deformation Mechanism of Solid Interfaces Subjected to Tangential Loads : Effects of Distribution of Contact Pressures and Lubricating Film

概要

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An experimental investigation is made of the tangential displacement and the energy dissipating properties at solid interfaces under various contact pressures and the lubricated or the nonlubricated condition. A tangential microslip and an elastic displacement due to contact asperities between a ground and a sandblasted mild steel surface and between two sandblasted mild steel surfaces are measured. The behaviours of the oil films and the deformed asperities during a tangential displacement are examined by measuring an electric contact resistance. The results presented show that the tangential microslip and the elastic displacement due to contact asperities are smaller for two sandblasted surfaces than for a ground on a sandblasted surface. The tangential microslip, the elastic displacement, and the area within a hysteresis loop in the process of unloading and reloading are largely affected by the apparent contact pressures, the oil films, and the preloads.
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