The bladed disk must be meshed such that the blade elements and the node interface separating the blade from the disk and/or the platform are readily accessible.

For good interpolation of the pressure data while mapping between the fluid-structural domains, you should define the mesh density of the structural blade closely to the mesh density of the CFD model.

Be sure to extract all modes that may contribute to the harmonic response. As a general guideline, modes contributing to the harmonic response fall in the range to , where is the harmonic frequency (HARFRQ) used in the subsequent harmonic solution. If mistuned, a range of to is recommended.

The mistuning in a bladed disk should always be considered as small.

For the case of a mistuned response analysis, all harmonic indices must be included.