Contact Stress and Bending Stress Analysis of a Pair of Mating Spur Gears by Theoretical and Finite Element Analysis Approach
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Date
2021
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MPUT Udaipur
Abstract
The American Gear Manufacturers Association (AGMA 2101-D04) is the most
pre-eminent experiential based scientific gear stress analysis method for determining root
bending stress and contact stress in involute spur gears. However, based on the same
basic principles, they have developed to such a level that, for various reasons, they are
not necessarily in accordance. Now a days the adoption of analytical formula based
approach and commercial finite element analysis based program has become a well liked
option0 for gear stress analysis. Hertzian formula and Lewis formula are two well-known
alternatives for finding out contact stress and bending stress respectively for a pair of
gears.
In this work, the main aim is to determine bending stress and contact stress on
involute spur gear teeth by using AGMA standard and formula based method and collate
the outcome of these methods to check percentage difference between the values. This
task of analysis was accomplished at different points of contact in rotating gears. Using
detailing of a gear, a design is developed and the process of procuring the design is
automatic with a computer application developed in this work.
Furthermore, the same design is opted for finite element analysis for procuring
bending stresses and contact stresses by using ANSYS software. For a mate cycle,
differences of bending and contact stresses procured from the two methods are
determined for distinct points of contact during rotation. These results are also compared
with AGMA standard results. The study shows that the software based results and formula based results are in
good accordance with the AGMA standards. It was also observed that, degree of contact
stress is higher than bending stress and having no any specific relationship with changes
in points of contact.
Description
Contact Stress and Bending Stress Analysis of a Pair of Mating Spur Gears by Theoretical and Finite Element Analysis Approach
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Citation
Jain A. And Agrwal C.