Preliminary Study of Frictional Power Losses in Spur Geared Transmissions
Journal Title: International Journal of Mechanical and Production Engineering Research and Development (IJMPERD ) - Year 2017, Vol 7, Issue 4
Abstract
Friction phenomenon in gear systems has been the subject of several studies in the last decades, and it is still a very active area of research. The complexity of the friction phenomenon, occurring when two teeth are in contact during the meshing phase, results in the fact that, many gear key parameters vary simultaneously essentially the velocities, the friction coefficient and the transmitted load. Due to the rising of fuel prices and the increase in energy demand on one hand, and the governmental regulations and environmental pressures in terms of the allowable gazes and particulates released to the environment which are becoming more and more strict on the other hand, there is a continuous demand for higher efficiency gears. The objective of this work is to contribute to a better understanding of the power losses due to the friction phenomenon in external spur gear sets, which can be grouped into two categories; sliding and rolling power losses. In this preliminary study, we present an analytical method to obtain the sliding power losses. In order to understand the engagement between the pinion and the wheel along the line of action, a geometric study was carried out and was used to instantly calculate different parameters that lead to the estimation of the sliding power losses. The rolling phenomenon will be discussed in our future work, since the total power losses related to friction is the sum of the sliding and rolling power losses.
Authors and Affiliations
Mushirabwoba Bernard, Lahcen Belfals, Brahim Najji, Abdelilah Lasri
Keywords
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