Open Access
Table 3
Changes of natural frequency with r (rad/s).
| r/mm | 0.8 | 1 | 1.2 | 1.4 | 1.7 | |
|---|---|---|---|---|---|---|
| Order one | ωe | 21395.4 | 13693.1 | 9509.1 | 6986.3 | 4738.1 |
| ω3 | 19300.8 | 11149 | 6854.8 | 4206.9 | 949.9 | |
| ωe − ω3 | 2094.6 | 2544.1 | 2654.3 | 2279.4 | 3788.2 | |
| Order two | ωe | 106977.1 | 68465.3 | 47545.4 | 34931.3 | 23690.4 |
| ω3 | 106478.2 | 67683.8 | 46414.4 | 33379.2 | 21352.4 | |
| ωe − ω3 | 498.9 | 781.5 | 1131 | 1552.1 | 2338 | |
| Order three | ωe | 249613.1 | 159752.4 | 110939.2 | 81506.3 | 55277.6 |
| ω3 | 249399.9 | 159419.5 | 110460.8 | 80857.2 | 54328.3 | |
| ωe − ω3 | 213.2 | 332.9 | 478.4 | 649.1 | 949.3 | |
| Order four | ωe | 449303.7 | 287554.3 | 199690.5 | 146711.4 | 99499.8 |
| ω3 | 449185.1 | 287369.1 | 199423.6 | 146348 | 98963.4 | |
| ωe − ω3 | 118.6 | 185.2 | 266.9 | 363.4 | 536.4 | |
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