Research Article
Vibration Test and Shock Absorption of Coal Crusher Chambers in Thermal Power Plants (II): Numerical Analysis
Table 4
Natural frequencies of structure from numerical results and test results.
| | Order | Calculation frequency (Hz) | Test frequency (Hz) | Vibration modal shape | Error |
| | 1 | 1.020 | 0.987 | Y direction horizontal vibration | 3.24% | | 2 | 1.052 | 1.012 | X direction horizontal vibration | 3.80% | | 3 | 1.211 | — | Z direction rotational vibration | — | | 4 | 2.887 | 2.763 | Y direction horizontal vibration | 4.30% | | 5 | 2.895 | 2.788 | X direction horizontal vibration | 3.70% | | 6 | 3.626 | — | Z direction rotational vibration | — |
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