Príspevok
INFLUENCE OF COMPRESSOR SPEED FLUCTUATION ON BEARINGS DESIGN
DOI: 10.18462/iir.compr.2021.0398
Sekcia: Reciprocating compressors 1
Stav prijatia: Príspevok prijatý
Autori
| Meno | Organizácia | |
|---|---|---|
| Mattias Castro | Secop Austria GmbH | |
| Miha Gulic | Secop Austria GmbH | |
| Eric Murakami | Secop Austria GmbH | |
| Blaz Terlevic | Secop Austria GmbH |
Abstrakt
Bearings reliability can be affected by multiple factors. Depending on the load and inertia of the rotating parts, the speed of the compressor during once cycle can fluctuate significantly. The main research objective is to investigate how speed fluctuation affects bearings design. The question is whether a fast variation of speed can significantly impact hydrodynamic and asperity power losses, contact pressures or minimum oil film thickness, which potentially influences bearing reliability. The software GT-Suite was used to estimate the speed fluctuation for several compressor application conditions. Then, the software AVL Excite was used to run multi-body dynamics simulation with elastohydrodinamic (EHD) bearings and flexible bodies to identify their critical conditions. A simplified model with one EHD bearing was used to estimate the effect of speed fluctuation on peak asperity contact pressure, showing this methodology´s applicability in minimizing the impact of speed fluctuation on compressor reliability.
Kľúčové slová
Bearings, Speed, Fluctuation, Asperity, Reliability