Stress analysis of a gear using photoelastic method and Finite element method: Review

Ramachandra, Preetham Marle; Sutar, Sanjay; Kumara, G.C. Mohan

doi:10.1016/j.matpr.2022.06.579

Cited by 6 publications

(2 citation statements)

References 10 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Nowadays, it is possible to cross-verify the methods of experimental shaping of casting with calculations based at least on the finite element method [FEM]. [ 34 , 35 , 36 , 37 , 38 , 39 , 40 ]…”

Section: Discussionmentioning

confidence: 99%

The Formation of the Strength of Castings including Stress and Strain Analysis

Maj

2024

Materials

View full text Add to dashboard Cite

This article presents some views on the subject of self- or residual stresses, trying to clarify some erroneously seemingly ingrained formulations in the introduction, which are widely used in castings and their classification (thermal, shrinkage, and phase stresses). For example, the location of their occurrence is often not specified, nor in which cross sections (volumes) they balance. In thin bars there are uniaxial stresses and in thin plates, stresses in two orthogonal directions are considered, while in castings, which are always three-dimensional objects, stresses in all planes should be considered. Meanwhile, to make matters worse, the complexity of calculations and possible experiments is rapidly increasing from the 1-axis to the 3-axis condition. A detailed analysis is made of how tensile and compressive stresses are calculated as a function of casting wall thickness, taking into account heat flow between walls of different thicknesses. The article presents selected methods of stress and strain testing, with particular emphasis on elasto-optical testing.

show abstract

Section: Discussionmentioning

confidence: 99%

The Formation of the Strength of Castings including Stress and Strain Analysis

Maj

2024

Materials

View full text Add to dashboard Cite

show abstract

“…The absence of dynamic stress analysis can have catastrophic effects, as were seen in the destruction of the European space Agency, Ariane rocket launcher in 1996 (6) . In photoelasticity use of white light is well known for analysis of isochromatic fringes in birefringent coating and for nondestructive evaluation of stress in mechanical components (7) . Photoelastic data are straightforward to obtain along solution region boundaries which are free surfaces or lines of symmetry.…”

Section: Introductionmentioning

confidence: 99%

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

Patil¹,

Patil²

2023

IJST

View full text Add to dashboard Cite

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.

show abstract