Finite element method based analysis of planetary gear systems considering backlash and manufacturing deviations

2017 ◽  
pp. 75-82
Author(s):  
A. Mihailidis ◽  
G. Korbetis ◽  
N. Drivakos ◽  
I. Nerantzis
Keyword(s):  
Finite Element Method ◽  
Finite Element ◽  
Planetary Gear ◽  
Gear Systems ◽  
Element Method

A Finite Element Method for the Dynamic Analysis of Automatic Transmission Gear Shifting with a Four-Degree-of-Freedom Planetary Gearset Element

2003 ◽  
Vol 217 (6) ◽  
pp. 461-473 ◽  
Author(s):  
N Zhang ◽  
A Crowther ◽  
D K Liu ◽  
J Jeyakumaran
Keyword(s):  
Finite Element Method ◽  
Finite Element ◽  
Automatic Transmission ◽  
Free Vibration Analysis ◽  
Planetary Gear ◽  
Rigid Body Dynamics ◽  
Degree Of Freedom ◽  
Parametric Change ◽  
Stiffness And Damping ◽  
Element Method

A dynamic model of a passenger car automatic transmission and driveline is developed for simulating transient torsional vibration in gearshifts. A finite element method is proposed for presenting the transient dynamics of the parametric system, element matrices are defined and then global inertial, stiffness and damping matrices are formulated corresponding to the defined global coordinate vectors. A four-degree-of-freedom matrix element is developed that describes the rigid body dynamics of the planetary gear set and is then integrated with the driveline system; this element captures the parametric change while the transmission speed ratios vary over gearshifts. Free vibration analysis and a transient 2-3 upshift simulation are discussed and results presented.

Vibrational Analysis of Planetary Gear Trains by Finite Element Method

2013 ◽  
Vol 284-287 ◽  
pp. 1012-1017
Author(s):  
Pei Yu Wang ◽  
Xuan Long Cai
Keyword(s):  
Finite Element Method ◽  
Finite Element ◽  
Dynamic Model ◽  
Impact Analysis ◽  
Planetary Gear ◽  
Steady States ◽  
Time Varying ◽  
Planetary Gear Trains ◽  
Gear Trains ◽  
Element Method

Planetary gear trains produce several advantages, including high speed reduction, compactness, greater load sharing and higher torque to weight ratio, which are used widely in wind turbine, automobiles, robot and other applications. In some important transmission applications, the noise and vibration are key concerns in design. In this paper, a 3D dynamic contact and impact analysis model of planetary gear trains has been proposed. Tooth surface friction, backlash, tolerance of peg hole, and time-varying stiffness were considered in this dynamic model. The ANSYS / LS-DYNA were utilized to analyze the dynamic responses of gear transmission of the planetary gears. The vibration behavior of an actual gear set under dynamic loading was simulated in the dynamic model. The stiffness and elastic deformation of gear teeth are calculated using the finite element method with actual geometry and positions of the gears. The time-varying position of the carrier defined as the vibration and noise source. After impact analysis, the numerical results of vibration of carrier involved with the transient and steady states. Through the Fast Fourier Transform (FFT) methods, frequency spectrums of the transient and steady states of the calculated vibration of planet carrier are obtained for the gearbox designer to avoid the resonance zone.

A Study of Wind Generator Set Planetary Gear Transmission Dynamics Analysis

2010 ◽  
Vol 168-170 ◽  
pp. 2590-2594
Author(s):  
Jian Jie Zhang ◽  
Wen Lei Sun ◽  
Lei Lei Ma
Keyword(s):  
Finite Element Method ◽  
Finite Element ◽  
Planetary Gear ◽  
Scientific Basis ◽  
Gear Transmission ◽  
Transmission Dynamics ◽  
Dynamics Analysis ◽  
Wind Generator ◽  
Element Method

This paper on wind generator set planetary gear had a simple introduction, and finite element method was used on the planetary gear transmission dynamics analysis, the conclusion was drawn that the different planetary gear in the direction of the force and deformation, so as to improve the quality of the gear is designed to provide a scientific basis.

Simulation of tuning graphene plasmonic behaviors by ferroelectric domains for self-driven infrared photodetector applications

Nanoscale ◽  
2019 ◽  
Vol 11 (43) ◽  
pp. 20868-20875 ◽  
Author(s):  
Junxiong Guo ◽  
Yu Liu ◽  
Yuan Lin ◽  
Yu Tian ◽  
Jinxing Zhang ◽  
...  
Keyword(s):  
Finite Element Method ◽  
Finite Element ◽  
Interfacial Effect ◽  
Infrared Photodetector ◽  
The Finite Element Method ◽  
Ferroelectric Domains ◽  
Element Method

We propose a graphene plasmonic infrared photodetector tuned by ferroelectric domains and investigate the interfacial effect using the finite element method.

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