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Published in:
Introduction and Applications of Tribology Read chapter Read first chapter

2020 | OriginalPaper | Chapter

12. Evaluation of the Effect of Friction in Gear Contact Stresses

Authors : Santosh S. Patil, Saravanan Karuppanan

Published in: Tribology in Materials and Applications

Publisher: Springer International Publishing

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Abstract

Stress analysis of gears has become a popular area of research in order to reduce failures and optimize the gear design. Friction between gears is detrimental to the gear surface contacts, but there is no effective method to determine the frictional effects on these contacts. Inclusion of friction in the study of gear contact is sparse. Also, friction depends on various other parameters, which in turn are ambiguous to evaluate. Hence, a quantitative study of frictional effects on gear contact problem is therefore essential. Thus, to solve the present problem, a dimensionless factor needs to be developed which would account for the friction in gear contact stress calculations. A simplified gear contact stress evaluation technique which includes friction needs to be developed. In this work, a 3D frictional Finite Element Method (FEM) was employed for the gear frictional study. Also, an experimental validation was carried out using a customised experimental setup, Gear Dynamic Stress Test Rig (GDSTR). The experimental results provided a good correlation with the results of the developed 3D FE models. The results from the validated FE models showed 15–22% rise in gear contact stresses for increased frictional coefficients, which is significant. The FE analysis was further extended and a parametric study was carried out. A dimensionless friction factor function was developed in this work to estimate the frictional gear contact stresses. The mathematically correlated Kf function was verified and its inclusion provides better frictional contact stress evaluation in gears, thus providing a simplified frictional measure in gear contact stress calculations.

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previous chapter Analysis of Journal Bearing with Partial Texture Lubricated Using Micropolar and Power-Law Fluids
next chapter Tribo-mechanical Aspects in Micro-electro Mechanical Systems (MEMS)
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Metadata
Title
Evaluation of the Effect of Friction in Gear Contact Stresses
Authors
Santosh S. Patil
Saravanan Karuppanan
Copyright Year
2020
Book
Tribology in Materials and Applications

Print ISBN: 978-3-030-47450-8

Electronic ISBN: 978-3-030-47451-5

Copyright Year: 2020

DOI
https://doi.org/10.1007/978-3-030-47451-5_12

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