SIMPACK Wind and Drivetrain Conference
SIMPACK Wind and Drivetrain Conference
SIMPACK Wind and Drivetrain Conference
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Global Elasticity<br />
Local Elast.<br />
<strong>SIMPACK</strong> <strong>Wind</strong> <strong>and</strong> <strong>Drivetrain</strong> <strong>Conference</strong><br />
Methods<br />
Bearings <strong>and</strong> Mounts<br />
Force Element 70, Elasto Hydro Dynamic (EHD) Bearings<br />
With v. 8902<br />
Impedanzce Method<br />
• Increasing complexity requires increased computation time<br />
1. Impedance Chart Method<br />
- Interpolation in dimensionless chart<br />
- Cylindrical bearing geometry<br />
- Constant gap in axial direction (no tilting)<br />
- No surface roughness contact<br />
2. Online FEM Method<br />
- Solution of Reynolds Equation in every time step<br />
- Arbitrary bearing geometry (Grooves, Oil supply)<br />
- Variable gap in axial direction (Tilting)<br />
- With surface roughness contact<br />
3. EHD Method<br />
- Features as Online FEM Method<br />
- In addition local bearing deformation<br />
- With surface roughness contact<br />
<strong>SIMPACK</strong> AG, S. Mulski 2010-06-17 Page 14<br />
Online FEM Method<br />
EHD Method<br />
x<br />
y<br />
z<br />
Model Complexity<br />
Calculation Speed
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