Research Article
Chaotic Behaviour Investigation of a Front Opposed-Hemispherical Spiral-Grooved Air Bearing System
Table 2
Comparison of numerical calculation results by Poincaré map of numerical displacement of rotor centre.
| | Conditions | Poincaré map | | () | () | | | | |
| | FDM | = 5.1 kg
= 6 × 106 rpm | 0.1037130279 | 0.1038378524 | −0.2539313115 | −0.2538991587 | | DTM and FDM | 0.1038771861 | 0.1038756587 | −0.2535875862 | −0.2535826268 | | Perturbation Method | 0.1032651536 | 0.1070747058 | −0.2558305761 | −0.2523962686 |
| | FDM | =6.2 kg
= 6 × 106 rpm | 0.1333187451 | 0.1330440082 | −0.2452767681 | −0.2454073653 | | DTM and FDM | 0.1334811874 | 0.1334689894 | −0.2457199581 | −0.2457613815 | | Perturbation Method | 0.1332782833 | 0.1331421019 | −0.2458672612 | −0.2456736825 |
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