Whole Field Analysis of Asymmetric Helical Gear Using Photo Stress Method and FEA Method

Prashant J Patil; Ashish Jayasing Patil

doi:10.17485/IJST/v16i2.1817

Article

Whole Field Analysis of Asymmetric Helical Gear Using Photo Stress Method and FEA Method

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Indian Journal of Science and Technology

DOI: 10.17485/IJST/v16i2.1817

Year: 2023, Volume: 16, Issue: 2, Pages: 109-117

Original Article

Whole Field Analysis of Asymmetric Helical Gear Using Photo Stress Method and FEA Method

Prashant J Patil¹, Ashish Jayasing Patil^2*

¹Assistant Professor, Department of Mechanical, Tatyasaheb Kore Institute of Engineering and Technology, Warananagar, India
²M.Tech. Student, Department of Mechanical, Tatyasaheb Kore Institute of Engineering and Technology, Warananagar, India

*Corresponding Author
Email: [email protected]

Received Date:09 September 2022, Accepted Date:28 November 2022, Published Date:13 January 2023

This work is licensed under a Creative Commons Attribution 4.0 International License.

Abstract

Objectives: To carry out dynamic state analysis of asymmetrical helical gears for contact stresses using photo stress technique and suitable finite element software. Methods: Currently the Hertz contact stress equation is used to calculate the contact stress which is based on certain speculations. The value of load transmitted by a gear may be known but whether it is taken by a single or more pairs of teeth are based on some assumptions and stresses thus calculated may not be true stresses. To get precise evaluation of stress field in gear tooth it is decided to carry out experimental work on asymmetric helical gear in actual working condition. The photo stress method not only provide magnitude of stress but also gives idea about stress distribution in gear. Finite element method is used for asymmetrical helical gear to validate experimental results. Findings: The stress values obtained by photostress method and FEA method has minimum error of 2.17% and maximum of 8.89% respectively. The error values are less than 10% and within the limit. We can observe close agreement between these two methods. Novelty: This study has provided a more accurate result than theoretical method of stress calculation. Photostress analysis method is one of the best test methods for evaluation of contact stress of asymmetric helical gear with different torque condition in actual working that is dynamic condition. Maximum error of 8.89% has been found with photostress method.

Keywords: Asymmetric Gears; Contact Stress; Experimental Method; Reflection Polariscope; PhotoStress; Finite Element Analysis

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© 2023 Patil & Patil. This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited. Published By Indian Society for Education and Environment (iSee)