Results 211 to 220 of about 1,223 (248)

Free Vibration Model and Characteristics of Planetary Gear Sets

Advanced Materials Research, 2013
Planetary gear sets have advantages of little noise, high transmission ratio, compact arrangement, so it has been widely applied in automobile and aerospace applications over the years. Using Lagrange equation, a free vibration theoretical model of a single planetary gear set was built, which was solved with modal superposition method.
Hui Jun Yue, Yan Fang Liu, Gang Shi, Xiang Yang Xu   +3 more
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A non-linear dynamic model for planetary gear sets

Proceedings of the Institution of Mechanical Engineers, Part K: Journal of Multi-body Dynamics, 2007
A discrete non-linear torsional vibration model of a single-stage planetary set is proposed in the current study. The model includes all possible power flow configurations, any number of planets in any spacing arrangement and any planet mesh phasing configurations. It also includes time variation of gear mesh stiffnesses as well as clearance (backlash)
A Al-Shyyab, A Kahraman
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Analysis of the efficiency of the planetary gear sets

2018
Planetary gears, obtained by the kinematic combinations of toothed pairs with external and internal contacts, are able to provide considerably improved performance compared to the gear pairs with fixed axes, however if not properly designed they can exhibit poor performance regarding gear efficiency.
Sedak, Miloš, Rosić, Božidar, Ristivojević, Mileta, Mitrović, Radivoje, Dimić, Aleksandar, Mišković, Žarko   +5 more
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An Experimental Investigation of the Dynamic Behavior of Planetary Gear Set

2013
In this paper an experimental planetary gear set rig is developed for dynamic analysis purposes. This bench is composed by two identical planetary gears connected by a common shaft. Two tri axial accelerometers are mounted in both rings. Series of mmeasurements were achieved to study the influence of speeds as well as loads on the dynamic behaviour of ...
Maha Karray, Fakher Chaari, Alfonso Fernandez Del Rincon, Fernando Viadero, Mohamed Haddar   +4 more
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Fault features analysis of a compound planetary gear set with damaged planet gears

Proceedings of the Institution of Mechanical Engineers, Part C: Journal of Mechanical Engineering Science, 2017
The fault properties of compound planetary gear set are much more complicated than the simple planetary gear set. A damaged planet will induce two periodic transient impulses in the raw signals and generates modulation sidebands around the mesh harmonics.
Guoyan Li, Fangyi Li, Haohua Liu, Dehao Dong   +3 more
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Investigating Vibration Properties of a Planetary Gear Set with a Cracked Tooth in a Planet Gear

Annual Conference of the PHM Society, 2014
Comparing with fixed shaft gearbox, vibration properties of planetary gearbox are much more complicated. In a planetary gearbox, there are multiple vibration sources as several pairs of sun-planet gears and several pairs of ring- planet gears mesh simultaneously. In addition, the signal transmission path changes due to the rotation
Xihui Liang, Ming J. Zuo
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Dynamic simulation of a planetary gear set and estimation of fault growth on the sun gear

2013 International Conference on Quality, Reliability, Risk, Maintenance, and Safety Engineering (QR2MSE), 2013
Planetary gears are widely used in aeronautic and industrial applications because of the properties of compactness and high torque-to-weight ratios. Due to high service load, harsh operating conditions or simply fatigue, faults may develop in gears.
null Xihui Liang, Ming J. Zuo
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Effect of Internal Gear Flexibility on the Quasi-Static Behavior of a Planetary Gear Set

Journal of Mechanical Design, 2000
Effect of flexibility of an internal gear on the quasi-static behavior of a planetary gear set is investigated. A state-of-the-art finite elements/semi-analytical nonlinear contact mechanics formulation is employed to model a typical automotive automatic transmission planetary unit.
Ahmet Kahraman, Sandeep Vijayakar
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Planetary gear set and automatic transmission simulation for machine design courses

Computer Applications in Engineering Education, 2003
AbstractDue to their unique ability to provide a variety of gear ratios in a very compact space, planetary gear systems are seen in many applications from small powered screw drivers to automobile automatic transmissions. The versatile planetary gear device is often studied as part of an undergraduate mechanical engineering program.
Scott T. Dennis, Daniel D. Jensen
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Optimisation of Spur Gears in a Planetary Hub Reduction Set

SAE Technical Paper Series, 1985
<div class="htmlview paragraph">This paper describes a computer program for optimising the bending and contact strength of the spur gears in a planetary hub reduction set. Classical optimisation techniques are not employed because of the complexity of the problem and the number and variety of constraints encountered.
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