### Calculates the natural vibrations of the given model.

## Inputs

Name | ID | Description | Type |

**Model** | Model | Model for which to calculate natural vibrations | Model |

**From index** | FromInd | Index of first natural vibration mode to be calculated. Numbering starts from one. | Integer |

**Number of modes** | NModes | Number of modes to be calculated | Integer |

**Maximum number of iterations** | MaxIter | Maximum number of Mises vector iterations for determining the eigenvalues. | Integer |

**Epsilon** | Eps | Convergence criteria for calculating the natural vibration frequencies. | Number |

## Outputs

Name | ID | Description | Type |

**Model with vibration modes as load-case results** | Model | Model with vibration-modes stored as load-cases. Vibration modes are scaled such that the largest displacement is 1[m]. | Model |

**Natural frequencies [Hz]** | NFrequ | Frequencies of the corresponding natural vibration mode | Number |

**Modal mass [kg]** | MMass | Modal mass [kg] of the corresponding natural vibration mode | Number |

**Participation-factor in global x-, y- and z-direction** | PartiF | Participation-factor in global x-, y- and z-directionThey are scaled according to the largest modal displacement being 1[m]. | Number |