Wear prediction of clearance joint by integrating multi-body kinematics with finite-element method

2010 ◽  
Vol 224 (8) ◽  
pp. 815-823 ◽  
Author(s):  
Y Su ◽  
W Chen ◽  
Y Tong ◽  
Y Xie
Keyword(s):  
Finite Element Method ◽  
Finite Element ◽  
Wear Prediction ◽  
Clearance Joint ◽  
Multi Body ◽  
Element Method

The Dynamics Analysis of a Multi-Stage Hybrid Planetary Gearing

2012 ◽  
Vol 538-541 ◽  
pp. 2631-2635
Author(s):  
Xin Tan ◽  
Yao Li ◽  
Jun Jie Yang
Keyword(s):  
Finite Element Method ◽  
Finite Element ◽  
Gear Tooth ◽  
The Finite Element Method ◽  
Dynamics Model ◽  
Multi Stage ◽  
Body Dynamics ◽  
Multi Body ◽  
Rich Spectrum ◽  
Element Method

This paper introduces a complex multi-body dynamics model which is established to simulate the dynamic behaviors of a multi-stage hybrid planetary gearing based on the finite element method and the software ADAMS. The finite element method is used to introduce deformable ring-gears and sun-gears by using 3D brick units. A whole multi-body dynamics model is established in the software ADAMS. Mesh stiffness variation excitation and gear tooth contact loss are intrinsically considered. A rich spectrum of dynamic phenomena is shown in the multi-stage hybrid planetary gearing. The results show that the static strength of main parts of the gearing is strong enough and the main vibration and noises are excited by the dynamic mesh forces acting on the tooth of planet-gears and ring-gears.

Sub-Synchronous Shaft Oscillations due to Oil Supply

2018 ◽  
Author(s):  
Luboš Smolík ◽  
Jan Rendl ◽  
Jan Stifter ◽  
Milan Omasta
Keyword(s):  
Finite Element Method ◽  
Finite Element ◽  
Computational Analysis ◽  
The Finite Element Method ◽  
Test Rig ◽  
Oil Supply ◽  
Oil Whip ◽  
Oil Whirl ◽  
Multi Body ◽  
Element Method

This paper aims at the modelling and investigation of unstable journal bearing with an emphasis on instabilities such as oil-whirl or further induced oil-whip. For this reason, a test rig for the investigation of these phenomena was built. Geometry, parameters and operating cases of the rig are described in detail in the presented paper. Computational analysis of the test rig was performed using two methods — the finite element method and a multi-body approach. The calculations of pressure distribution in journal bearings were also performed applying two methods — the finite difference method and the finite element method. The results of the analysis are properly introduced and discussed at the end of this paper. The results suggest that a yet unknown sub-synchronous component may appear under specific conditions. The component typically appears at frequency 0.9–0.98 of shaft speed and is likely caused by a location of a bore for oil supply.

Numerical integration schemes and parallel computation for wear prediction using finite element method

Wear ◽  
2009 ◽  
Vol 266 (7-8) ◽  
pp. 822-831 ◽  
Author(s):  
Saad Mukras ◽  
Nam H. Kim ◽  
W. Gregory Sawyer ◽  
David B. Jackson ◽  
Lawrence W. Bergquist
Keyword(s):  
Finite Element Method ◽  
Finite Element ◽  
Numerical Integration ◽  
Parallel Computation ◽  
Wear Prediction ◽  
Integration Schemes ◽  
Element Method
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