Tribogyr: a new test rig for high spinning EHL large size contacts

摘要

Only few studies have been published on EHD contacts that experienced simultaneously rolling, sliding and spinning motions. This paper describes a new test rig especially designed to simulate such operating conditions while imposing normal load and speeds as those found in real life mechanisms. Then, experimental results are presented and discussed. R_L: spherical end specimen (or ball) radius (m); R_U: track radius on the disc (m); U_L: lower specimen linear speed at the contact centre (m/s); U_U: upper specimen linear speed at the contact centre (m/s); U_e=(U_L+U_U)/2: entrainment (or rolling) speed (m/s)