Nonlinear dynamics of planetary gears using analytical and finite element models

Ambarisha, Vijaya Kumar; Parker, Robert G.

doi:10.1016/j.jsv.2006.11.028

Cited by 309 publications

(149 citation statements)

References 28 publications

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“…Gear tooth failures are generally assessed by the determination of the tooth stiffness reduction. The finite elements method is the most frequently used technique to do this [5][6][7][8], but it requires, in certain applications, mesh refinements and then much computations time. Analytical methods can be a good alternative to model tooth failures.…”

Section: Physical Model Of Planetary Gears With Damagementioning

confidence: 99%

Pitting Damage Levels Estimation for Planetary Gear Sets Based on Model Simulation and Grey Relational Analysis

Cheng

et al. 2011

Transactions of the Canadian Society for Mechanical Engineering

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The planetary gearbox is a critical mechanism in helicopter transmission systems. Tooth failures in planetary gear sets will cause great risk to helicopter operations. A gear pitting damage level estimation methodology has been devised in this paper by integrating a physical model for simulation signal generation, a three-step statistic algorithm for feature selection and damage level estimation for grey relational analysis. The proposed method was calibrated firstly with fault seeded test data and then validated with the data of other tests from a planetary gear set. The estimation results of test data coincide with the actual test records, showing the effectiveness and accuracy of the method in providing a novel way to model based methods and feature selection and weighting methods for more accurate health monitoring and condition prediction.Keywords: planetary gear sets; pitting damage; feature selection; grey relational analysis; damage level estimation. TITRE FRANÇAIS DE L'ARTICLE (MAXIMUM DEUX LIGNES) RÉSUMÉLe résumé français est obligatoire. Évidement, si l'article est rédigé en français, le titre principal et le résumé principal sont en français. Par contre, il ne faut pas traduire le texte « Received…Accession Number 0000 ».Mots-clés : premier mot-clé; deuxième mot-clé; troisième mot-clé. INTRODUCTIONThe majority of mishaps in helicopters are caused by engine and drive train failures. To reduce these mechanically induced failures and excessive maintenance, it is vital to accurately identify and diagnose developing faults in the mechanical system. Planetary gear sets are common mechanical components and are widely used to transmit power and change speed and/or direction in rotary aircrafts. One of the most common causes of planetary gear sets failure is tooth defect due to excessive stress conditions. It results in progressive damage to gear teeth and ultimately leads to the complete failure of the planetary gear sets. This fault is particularly challenging as it is located deep inside the main transmission, suggesting it would be difficult to detect earlier.

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Section: Physical Model Of Planetary Gears With Damagementioning

confidence: 99%

Pitting Damage Levels Estimation for Planetary Gear Sets Based on Model Simulation and Grey Relational Analysis

Cheng

et al. 2011

Transactions of the Canadian Society for Mechanical Engineering

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“…Wang and Howard [3] analyzed torsional stiffness of a pair of involute spur gears in mesh using finite element method, adaptive meshing was employed within a finite element program to reveal the detailed behavior alteration over region from single to double tooth contact zones and vice versa. Vijaya et al [4] behavior. Responses from the dynamic analysis using analytical and finite element models were compared.…”

Section: Introductionmentioning

confidence: 99%

Spur Gears Static and Dynamic Meshing Simulation and Tooth Stress Calculation

Jammal

Wang

2015

MATEC Web of Conferences

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Abstract. Gear meshing is a complicated process, and is subjected to the simulation process in the following paper. A flexible quasi-static and dynamic finite element analysis (FEA) models were built, to calculate contact principal and shear stresses. Full sized 3D spur gears are simulated under different boundary conditions. The first model, was a quasi-static analysis, where torque was used as input; and the second model, which was transient dynamic analysis, where rotational speed was used as input. The static analysis showed high stress concentration at the tooth contact point and under the contacting surface. The dynamic analysis provided the highest stress value at the different stages of gear engagement points along the line of action. Analytical and simulation result were in agreement in general, and the use of the new simulation model was discussed.

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“…Domestic and foreign scholars have studied the dynamic characteristics and fault diagnosis of planetary gearboxes. Parker considered the gear meshing phase and the influence of the nonlinear parameters on the dynamic characteristics of the system, established the centralized parameter model of planetary gear drive system to study the nonlinear dynamics [1]. Inalpolat from America proposed the discrete two-dimensional nonlinear time-varying dynamics model of planetary gearboxes [2].…”

Section: Introductionmentioning

confidence: 99%

A Novel Method for Fault Diagnosis of Planetary Gearbox

Liu¹,

Jian-guo²

2018

Proceedings of the 2018 3rd International Conference on Electrical, Automation and Mechanical Engineering (EAME 2018)

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Abstract-The transmission path of planetary gearbox is complex and the fault signal can easily be submerged in the noise signal, so a novel method for fault diagnosis of planetary gearboxes was proposed in the paper, which combined the simulation modeling with the sensor signal processing. Through the dynamic modeling and simulation of the planetary gearbox, it was found that the frequency domain characteristic parameters of the simulation signal can identify different types of sun gear failures. The practical signals were analyzed by the methods of the local wave decomposition, approximate entropy, rough set theory. The minimal fault characteristic parameter set of planetary gearboxes was obtained. The results show that the minimal fault feature parameter set can diagnose different fault types quickly and efficiently with the accuracy of up to 95%.

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Nonlinear dynamics of planetary gears using analytical and finite element models

Cited by 309 publications

References 28 publications

Pitting Damage Levels Estimation for Planetary Gear Sets Based on Model Simulation and Grey Relational Analysis

Pitting Damage Levels Estimation for Planetary Gear Sets Based on Model Simulation and Grey Relational Analysis

Spur Gears Static and Dynamic Meshing Simulation and Tooth Stress Calculation

A Novel Method for Fault Diagnosis of Planetary Gearbox

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