Load sharing characteristics of multi-stage planetary gear train using analytical and finite element model

2016 ◽  
Vol 53 (2) ◽  
pp. 107 ◽  
Author(s):  
Sheng Li ◽  
Zhiqiang Zhang ◽  
Jinping Dong
Keyword(s):  
Finite Element ◽  
Finite Element Model ◽  
Planetary Gear ◽  
Load Sharing ◽  
Element Model ◽  
Gear Train ◽  
Planetary Gear Train ◽  
Multi Stage

Analysis on Transient Dynamic Load of Planetary Gear Pair

2014 ◽  
Vol 988 ◽  
pp. 353-358
Author(s):  
Xian Long Jiang ◽  
Suo Huai Zhang ◽  
Yan Xu Jia ◽  
Hao Zhang
Keyword(s):  
Finite Element ◽  
Planetary Gear ◽  
Element Model ◽  
Tooth Profile ◽  
Gear Train ◽  
Contact Theory ◽  
Gear Pair ◽  
Time Curve ◽  
Planetary Gear Train ◽  
Element Theory

The geometry of a precise involute NGW planetary gear train has been built by Solidworks, the overall finite element model of planetary gear train has been built in ANSYS Workbench. According to the non-linear finite element contact theory and the finite element theory, instantaneous state mesh of Planetary Gear Pair has been simulated dynamically. And the time curve of the maximum stress strain for planetary gear train and the stress law of the mesh for each gear in different tooth profile were obtained. The variation of stress in different tooth profile of mesh has been analyzed to improve the performance of the planetary gear and reliability to provide some theoretical guidance.

Contact Analysis of Gear Trains Using Linear Complementarity Based Compliant Contact Model

2019 ◽  
Author(s):  
Mangesh Pathak ◽  
Sourav Rakshit
Keyword(s):  
Finite Element ◽  
Computation Time ◽  
Planetary Gear ◽  
Element Model ◽  
Linear Complementarity ◽  
Contact Analysis ◽  
Contact Forces ◽  
Gear Train ◽  
Spur Gears ◽  
Gear Contact

Abstract The current computation models for gear contact analysis and wear prediction are mostly based on finite element analysis which consumes much computation time and effort. In this work, we adopt an alternative approach for gear contact analysis using linear complementarity. This approach was successfully applied to a pair of rigid spur gears and a planetary gear train (gears are considered as rigid bodies) in our previous work. In this paper, we extend our linear complementarity model to consider local deformation caused due to contact between gear teeth in mesh. Thus obtained linear complementarity model is applied to a pair of spur gears and a planetary gear train. A linear complementarity solver computes the contact forces between meshing teeth of gears. From the contact forces, sliding wear in gear teeth is predicted. Archard’s wear model is used for the wear prediction. Using this model, the contact forces are uniquely determined for the examples considered. The results of linear complementarity and finite element model for a pair of spur gears are compared. The linear complementarity model consumes much less computation time than the finite element model.

The effect of a localized fault in the planet bearing on vibrations of a planetary gear set

2018 ◽  
Vol 53 (5) ◽  
pp. 313-323 ◽  
Author(s):  
Jing Liu ◽  
Yajun Xu ◽  
Yimin Shao ◽  
Huifang Xiao ◽  
Hongwu Li
Keyword(s):  
Finite Element ◽  
Finite Element Model ◽  
Dynamic Characteristics ◽  
Rotational Velocity ◽  
Planetary Gear ◽  
Element Model ◽  
Previous Method ◽  
Outer Race ◽  
Velocity Moment ◽  
The Finite Element Model

Dynamic characteristics of a planetary gear set can be greatly affected by a localized fault in the planet bearing. To understand the relationship between the dynamic characteristic of the planetary gear set and the localized fault sizes, a dynamic finite element model for a planetary gear set is developed. A localized fault is assumed to be located in the outer race of the planet bearing. The fault profile is defined as a rectangular one. To formulate the elastic deformations of the components and elastic contact deformations between the mating components, all components of the planetary gear set are considered as elastic bodies in the finite element model. A standard gravity is also considered in the finite element model. A Coulomb frictional model is used to formulate the frictional forces in the planetary gear set. Influences of the rotational velocity, moment, and fault width on the dynamic characteristics of the planetary gear set are discussed. The simulation results are compared with those from the previous method to validate the finite element model. It seems that the presented finite element model can be applied to simulate the dynamic characteristics of a planetary gear set caused by a localized fault in the outer race of the planet bearing.

Influence of the Carrier Pinhole Position Errors on the Load Sharing of a Planetary Gear Train

2018 ◽  
Vol 19 (4) ◽  
pp. 537-543 ◽  
Author(s):  
Jeong-Gil Kim ◽  
Young-Jun Park ◽  
Sang-Dae Lee ◽  
Joo-young Oh ◽  
Jae-Hoon Kim ◽  
...  
Keyword(s):  
Planetary Gear ◽  
Load Sharing ◽  
Gear Train ◽  
Planetary Gear Train ◽  
Position Errors

scholarly journals Analysis of Dynamic Behavior of Multiple-Stage Planetary Gear Train Used in Wind Driven Generator

2014 ◽  
Vol 2014 ◽  
pp. 1-11 ◽  
Author(s):  
Jungang Wang ◽  
Yong Wang ◽  
Zhipu Huo
Keyword(s):  
Planetary Gear ◽  
Load Sharing ◽  
Gear Train ◽  
Planetary Gear Train ◽  
Change Rate ◽  
Revolution Speed ◽  
Lumped Parameter ◽  
Parallel Axis ◽  
Dynamic Load Sharing ◽  
Parameter Theory

A dynamic model of multiple-stage planetary gear train composed of a two-stage planetary gear train and a one-stage parallel axis gear is proposed to be used in wind driven generator to analyze the influence of revolution speed and mesh error on dynamic load sharing characteristic based on the lumped parameter theory. Dynamic equation of the model is solved using numerical method to analyze the uniform load distribution of the system. It is shown that the load sharing property of the system is significantly affected by mesh error and rotational speed; load sharing coefficient and change rate of internal and external meshing of the system are of obvious difference from each other. The study provides useful theoretical guideline for the design of the multiple-stage planetary gear train of wind driven generator.

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