Modal Analysis of the Clutch Single Spur Gear Stage System with Eccentricity Defect

Ghorbel, Ahmed; Abdennadher, Moez; Walha, Lassâad; Zghal, Becem; Haddar, Mohamed

doi:10.1007/978-3-319-96181-1_8

Cited by 4 publications

(2 citation statements)

References 8 publications

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“…Modelling mesh stiffness for the straight bevel gear Time-varying mesh stiffness reflects the flexibility of gear teeth in mesh and the variation of the number of teeth pairs in contact. In various studies, the mesh stiffness of a gear system is assumed to be the sole source of excitation 50,51,28 . Thus, the mesh stiffness should be modelled accurately so that the proposed dynamic model may reflect the actual dynamic characteristics of a gear system.…”

Section: Damping Modellingmentioning

confidence: 99%

Effects of the interval geometric deviation and crowning parameters on the automotive differential dynamics

Lafi

Djemal

Akrout

et al. 2021

Proceedings of the Institution of Mechanical Engineers, Part K:

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A differential mechanism is an essential component in the majority of automotive applications. Its vitality stems from the fact that it allows a wheel-drive vehicle to take a curve safely. On the other hand, it can ratchet up the vibration in the wheel-drive vehicle due to the excessive gear tooth deflection from applied torque. Some gear tooth modifications can increase or decrease the level of vibration in the mechanism. So far, very little attention has been paid to the effects of the uncertain geometric deviation of the tooth profile and uncertain crowning parameters on the dynamic performance of the mechanism. This study aims to investigate the impacts of these uncertain parameters on the gear systems’ dynamic performance. To this end, the nonlinear interval model of the differential mechanism is proposed. The mesh stiffness for straight bevel gear is modelled through the potential energy method and slice theory, while bearing stiffness elements are calculated at each time step. A refined computational algorithm is proposed to deal with any gear system with multiple interval variables. The scanning method is used as a reference method in this paper. The main outcomes of this study are that the crowning design can slightly reduce the vibration in the mechanism, and the profile errors can increase its vibration level excessively. Besides, the results derived from the refined algorithm show similarities to those determined by the scanning method, and the study shows that the refined algorithm can handle any gear system with uncertain static or time-varying parameters.

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Section: Damping Modellingmentioning

confidence: 99%

Effects of the interval geometric deviation and crowning parameters on the automotive differential dynamics

Lafi

Djemal

Akrout

et al. 2021

Proceedings of the Institution of Mechanical Engineers, Part K:

Self Cite

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“…Unexpected gear faults caused by initial defects may cause signi cant economic losses [8]. In order to explore the in uence of initial defects on gear wear life under harsh working conditions, it is necessary to study the wear characteristics of gear under linear initial defects.…”

Section: Introductionmentioning

confidence: 99%

Study on Wear Characteristics Evolution of Helical Gear With Linear Initial Defect

Zhu

Yuan

Guo

et al. 2021

Preprint

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The initial defects have greatly affected the gear transmission under harsh working conditions in the fields of wind power and ships. The influence of linear initial defects on the evolution of wear characteristics of helical gears was studied. The laser marking device was used to process the linear initial defect along the tooth width direction, and the gear without initial defect was used for comparison. It can be concluded that the linear initial defect changed the meshing state of the gear tooth, and greatly shortened the normal wear life of the gear, the normal wear life of the gear is shortened by about 45%, and the wear rate in the stable wear stage is increased by about 56%, a great deal of pitting corrosion and plastic flow on the tooth surface occurred in the pitch circle position of the defective gear. In addition, the lubrication condition deteriorated in the later period caused by lubricating oil pollution and the hard particles falling off the gearbox bearings entered the meshing surface and the emerged crack, which further accelerated the wear process of gear.

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Robustness of a Complex System: Double-Stage Gearing System, with GPC and MC Methods

Kacem,

Trabelsi,

Dammak

et al. 2024

Lecture Notes in Mechanical Engineering

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Modal Analysis of the Clutch Single Spur Gear Stage System with Eccentricity Defect

Cited by 4 publications

References 8 publications

Effects of the interval geometric deviation and crowning parameters on the automotive differential dynamics

Effects of the interval geometric deviation and crowning parameters on the automotive differential dynamics

Study on Wear Characteristics Evolution of Helical Gear With Linear Initial Defect

Robustness of a Complex System: Double-Stage Gearing System, with GPC and MC Methods

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