Analysis Wizard : Harmonic Analysis

This page defines the analysis parameters and the output requirements. If no modal dynamic analysis results are present, this option is disabled and this page cannot be opened. The load is assumed to vary as

$$f(t) = a \sin(ωt)$$

Definition

Modal Analysis Task

If more than one set of modal dynamic analysis results exist it needs to know which set of results are to be used. If only one modal dynamic analysis task is available, it will be used by the analysis.

Load Description

The load description defines the spatial distribution of the harmonic load. The syntax of the description is the same as other analyses, e.g. 1.4L1+1.6L2.

Excitation Frequencies

The excitation is assumed to cover a range of frequencies: define the lowest, highest frequencies and the frequency increment. These will be used to generate the actual frequencies to be used in the harmonic analysis. The number of harmonic analysis cases will be equal to the number of input harmonic frequencies determined by the lowest, highest frequencies and frequency increment.