Research Article
Multiple-Modal-Coupling Modeling and Stability Analysis of Cold Rolling Mill Vibration
Table 3
Comparisons of calculated critical rolling speeds with test data.
| Number | (mm) | (mm) | (mm) | (mm) | (MPa) | (MPa) | (MPa) | (m) | Critical rolling speed (m/min) | Test | Calculated | Relative error |
| 1 | 2.000 | 0.789 | 0.577 | 1206 | 180 | 189 | 810 | 0.30 | 1090 | 1240 | 13.76% | 2 | 1.974 | 0.719 | 0.512 | 1018 | 180 | 190 | 845 | 0.30 | 1229 | 1263 | 2.77% | 3 | 1.962 | 0.658 | 0.472 | 1006 | 150 | 160 | 810 | 0.30 | 1271 | 1287 | 1.26% | 4 | 1.845 | 0.645 | 0.468 | 1006 | 150 | 160 | 810 | 0.30 | 1274 | 1300 | 2.04% | 5 | 2.022 | 0.659 | 0.468 | 1006 | 150 | 160 | 810 | 0.30 | 1274 | 1277 | 0.24% | 6 | 1.966 | 0.720 | 0.513 | 1018 | 180 | 190 | 840 | 0.30 | 1156 | 1271 | 9.95% | 7 | 1.966 | 0.720 | 0.513 | 1018 | 180 | 190 | 810 | 0.30 | 1059 | 1206 | 13.89% | 8 | 2.000 | 0.755 | 0.568 | 1206 | 156 | 197 | 810 | 0.30 | 1220 | 1315 | 7.79% | 9 | 1.998 | 0.754 | 0.575 | 1206 | 160 | 200 | 820 | 0.29 | 1188 | 1329 | 11.87% | 10 | 1.964 | 0.718 | 0.517 | 1006 | 176 | 119 | 830 | 0.30 | 1300 | 1305 | 0.38% |
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