GSD-16 EVALUATION OF SURFACE TEMPERATURE AND FRICTION COEFFICIENT FOR SLIDING-ROLLING CONTACT TESTS(GEAR STRENGTH AND DURABILITY, INCLUDING GEAR MATERIALS AND HEAT TREATMENT TECHNIQUES)

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The surface temperature and friction coefficient for sliding-rolling contact, which has a large influence on gear pitting strength, are evaluated by numerical analysis compared with experimental measurements of a two-roller contact apparatus. As the results, surface temperature and friction coefficient evaluated by numerical analysis are in qualitative agreement with those of experimental measurements; the surface temperature increases with sliding velocity, and friction coefficient decreases with sliding velocity. The numerical analysis differ from experimental measurements on condition that contact pressure is low or that sliding velocity is low, however, the numerical analysis is in good agreement with experimental measurements on other condition. The remaining problem of numerical analysis is the contributing rate of sliding in the lubricant shearing force is estimated. Another remaining problem is heat transfer model of rollers. INTRODUCTION The estimation of contact surface temperature and friction coefficient are important for automotive parts design intending improvements of fuel milage and reliability. They are also important for developments of lubricants and material for automotive parts. Friction loss generated by contact surface of automotive parts, bearings, gears, and so on, has a large influence on fuel milage. The temperature rise caused by friction loss has a large
一般社団法人日本機械学会の論文
2009-05-13