For Case 3, it can be seen from Figure 38(b) and Table 11 that the first three harmonic frequencies predicted by the SF-VE are equal to the corresponding experimental data, and the relative error between the fourth harmonic frequency by the SF-VE and the corresponding experimental is 2.78%. The first four harmonic frequencies predicted by the CB-UF-VE and the MIAB-UF-VE are all equal to the corresponding experimental data.

Table 11

Order . | Predicted frequencies and experimental data (Hz) . | |||
---|---|---|---|---|

SF-VE . | CB-UF-VE . | MIAB-UF-VE . | Experimental data . | |

1 | 0.33 | 0.33 | 0.33 | 0.33 |

2 | 1.00 | 1.00 | 1.00 | 1.00 |

3 | 1.73 | 1.73 | 1.73 | 1.73 |

4 | 2.47 | 2.40 | 2.40 | 2.40 |

Order . | Predicted frequencies and experimental data (Hz) . | |||
---|---|---|---|---|

SF-VE . | CB-UF-VE . | MIAB-UF-VE . | Experimental data . | |

1 | 0.33 | 0.33 | 0.33 | 0.33 |

2 | 1.00 | 1.00 | 1.00 | 1.00 |

3 | 1.73 | 1.73 | 1.73 | 1.73 |

4 | 2.47 | 2.40 | 2.40 | 2.40 |

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