A dynamic load distribution model of planetary gear sets

Ryali, Lokaditya; Talbot, David

doi:10.1016/j.mechmachtheory.2020.104229

Cited by 37 publications

(12 citation statements)

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“…Finally, Table 1 categorized references in five different sections. [97]; Parker (2000) [98]; Parker and Lin (2004) [99]; Shweiki et al (2016) [100]; Ambarisha and Parker (2007) [101]; Huang et al (2022) [102]; Wang and Parker (2022) [103]; Ryali and Talbot (2021) [49]; Sanchez-Espiga et al ( 2021) [53]. Ryali et al (2021) [34]; Sanchez-Espiga et al (2019) [40]; Sanchez-Espiga et al (2020) [43]; [82]; Zhu et al (2013) [95];…”

Section: Discussionmentioning

confidence: 99%

“…Ryali et al [49], in 2021, studied the influence of several components such as gear mesh phasing, tooth modifications, manufacturing errors, and contact ratio on a three-dimensional dynamic load distribution model of planetary gear sets under various gear mesh phasing conditions. In this study, the multibody dynamics problem is solved by a numerical integration scheme combined with an iterative elastic contact algorithm.…”

Section: Planetary Gear Phasingmentioning

confidence: 99%

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Planet Load-Sharing and Phasing

et al. 2022

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This paper presents an analysis of the scientific literature devoted to the problem of load sharing and phasing in planetary gearboxes. The wide range of research topics demonstrates the technical challenges of understanding planetary load-sharing and planet phasing. This review includes studies having the goal of developing models for load sharing and exploring the positive or negative effects of different parameters such as phasing on the load distribution among planets. Practical aspects are also considered, for example, the effects of some errors that are unavoidable during manufacturing or working conditions, e.g., misalignments or position errors. Methods for improving the load-sharing characteristics, e.g., flexible ring or floating components, are discussed as well.

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Section: Discussionmentioning

confidence: 99%

Section: Planetary Gear Phasingmentioning

confidence: 99%

Planet Load-Sharing and Phasing

et al. 2022

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“…Li et al [26] observed the influence law of each excitation factor from the perspective of bifurcation characteristics, and researched whether the change in backlash would affect whether the system was periodic or chaotic. Ryali et al [27] proposed a three-dimensional dynamic load distribution model of planetary gear sets. Mo et al [28] inspected the load-sharing characteristics of flexible support when the sun gear is floating and normal.…”

Section: Introductionmentioning

confidence: 99%

Dynamic Modeling and Analysis of Nonlinear Compound Planetary System

Cui

Zan

et al. 2022

Machines

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In the vehicle composite planetary gear transmission system, nonlinear excitations such as time-varying meshing stiffness, backlash and comprehensive error would lead to large vibration and noise, uneven load distribution, unstable operation and other problems. To address these issues, this work focuses on compound planetary gears and develops the bending-torsion coupling nonlinear dynamic model of the system based on the Lagrange equation. There are internal and external multi-source excitations applied to the system. This model is used to study the bending-torsion coupling meshing deformation relationship of each meshing pair along with the translational and torsional directions. The natural frequencies and vibration modal characteristics of the system are extracted from the model, and the influence of rotational inertia and meshing stiffness on the inherent characteristics of the system are studied. The coupling vibration characteristics of the system under operating condition are analyzed in terms of the inherent characteristics and time–frequency characteristics of the system. The simulation results exhibit that the planetary gear system has three modes. The change in natural frequency trajectory has two phenomena: modal transition and trajectory intersection. The main frequencies include engine rotating frequency, meshing frequency and its double frequency, and the rotation frequency and harmonic frequency of the engine have a great influence on the vibration response of the system. Finally, the virtual prototype of the composite planetary system is used to verify the accuracy of the established model from speed, inherent characteristics, meshing force and frequency composition.

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“…Therefore, new mathematical models are currently being developed and existing ones are being improved to study the dynamic characteristics of such mechanisms [1][2][3][4]. A separate scientific brunch has emerged, devoted to the study of the influence of deformations caused by the working conditions of the gearbox, and technological errors that occur during manufacture and assembly, on the dynamic characteristics of the gearbox [5,6].…”

Section: Introductionmentioning

confidence: 99%