Conference Papers

Permanent URI for this collectionhttps://idr.nitk.ac.in/handle/123456789/28506

Browse

Filters

2021 - 20222

Settings

Subject: search.filters.subject.Spur gear

Search Results

Now showing 1 - 2 of 2
  • No Thumbnail Available
    Item
    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. © 2021 Elsevier Ltd. All rights reserved.
  • No Thumbnail Available
    Item
    Finite Element Analysis for Material Optimization of a Spur Gear by Radial Holes
    (Springer Science and Business Media Deutschland GmbH, 2022) Sutar, S.; Kumar, G.C.; Doddamani, M.
    Use of advanced materials in gear manufacturing lead to the best use of the material is achieved by geometric optimization, which uses less material. Removal of the material from gear makes lighter weight gear, and the simulation study helps in understanding their effects on stress distribution. This present research work focuses on removing material from the gear tooth for developing lightweight gears. Circular holes are introduced radially through the gear tooth and holes of 1.5 mm diameter created from top land of the gear tooth with varying depth from 5 to 20 mm. This leads to a volume reduction of 2.49% to a maximum of 12.451% as compared to no radial hole on gear. The analysis of CAD models created in CREO software of pinion and gear assembly is carried out in Ansys Workbench 17.2. Stresses in gear proposed are compared with the gear without a hole. The magnitude of stresses at the roots for both pinion and gear is observed and discussed. © 2022, The Author(s), under exclusive license to Springer Nature Singapore Pte Ltd.