Browsing by Author "Sutar, S.S."

Now showing 1 - 3 of 3

Analysis of spur gears drilled with radial holes on teeth surface for effective weight reduction
(Springer Science and Business Media Deutschland GmbH, 2025) Sutar, S.S.; Kumar, G.C.; Doddamani, M.
Optimizing the geometry for efficient material utilization and gear weight reduction involves strategically removing material from gear teeth. This present study examines the stresses induced in the gears featuring radial holes within the gear tooth focused on lightening the weight of conventional gears. Radial holes are introduced at varying depths from the top of the gear tooth. The analysis uses ANSYS to assess the stresses in a conventional gear tooth and also the tooth with radial holes. Examining stress magnitudes near the gear root under similar loading and boundary conditions is critical and interesting. A complementary photoelastic approach is implemented, and stress distribution in these gears is confirmed to ensure the findings of finite element analysis. This approach retains the stress distribution while achieving a notable 6.7% reduction in volume compared to a conventional AGMA spur gear. Moreover, these radial holes are envisaged to contribute to adequate gear lubrication and cooling through fluid motion. © The Author(s), under exclusive licence to The Brazilian Society of Mechanical Sciences and Engineering 2024.
Gear stress reduction using stress relief features: A review
(Elsevier Ltd, 2021) Sutar, S.S.; Kumar, G.C.M.; Doddamani, M.
To increase the life of the gear against fatigue failure, which occurs because of repetitive tensile stresses at the root of the tooth is a challenging task. The inability of gear is very sudden against fatigue loading without giving any indications of failure. Many researchers gave practical ways for improving the gear design like, the use of advanced material, harden the gear surface by heat treatment and carburization, improve the surface finish by shot penning method, changing the pressure angle, use asymmetric gear tooth, modify the shape of root fillet curve, etc. But focusing at interchangeability of gear systems all these ways are insufficient. To overcome this and to achieve a reduction of stresses in the stressed zone under loading, introducing stress relief feature in those areas is a powerful technique. For stress reduction in spur gear, this research work reviews use of stress-relieving features like circular shaped, elliptical-shaped, aero fin-shaped in the stressed zone. Also, it has summarized the effect of combinations of stress relief features, optimized locations of these features to minimize the stresses and increase the life of the gear. Â© 2021 Elsevier Ltd. All rights reserved.
Numerical and experimental stress analysis of spur gears for weight reduction using radial holes
(Springer-Verlag Italia s.r.l., 2024) Sutar, S.S.; Kumar, G.C.M.; Doddamani, M.
Geometric optimization for the optimal use of material and the weight reduction of gear is possible by removing material from the gear teeth. The current research focuses on the stress analysis of gear with radial holes drilled through the gear tooth to reduce the weight of standard gear. The radial holes from the tip of the gear tooth for different depths are introduced. A standard gear with holes is analyzed using ANSYS, and the magnitude of stresses near the root of the gears for similar loading and boundary conditions are studied. New efforts have been made to study the stress distribution by photoelastic technique to supplement FEA results and confirm the stress distribution of gear with and without radial holes. This process achieves a volume reduction of up to 6.1% compared to an AGMA standard spur gear without affecting much of the stress distribution. These holes may be helpful for adequate lubrication and cooling of gears by fluid circulation. © The Author(s), under exclusive licence to Springer-Verlag France SAS, part of Springer Nature 2023.