Abstract
Gears serve as the primary power transmission element in many industrial and automotive applications. Power loss in the form of heat generation contributes both to reduced fuel economy and elevated transmission operating temperatures which can lead to premature failure of components. The power loss is made up of both load independent losses and load dependent losses. Gear designers need engineering tools to estimate both components to determine overall system efficiency. This research seeks to utilize stochastic descriptions of surface asperity profiles with simplified Elastohydrodynamic lubrication (EHL) metrics to estimate the effective friction coefficient in mixed lubrication gear contacts. Power loss experiments are performed to measure load dependent gear losses and compare them to the model results.
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