Argument

Options

Description

setg

<ALL, NONE, SID>

Default = NONE

ALL:

Output acoustic grid participation for all structural grid points at the fluid-structure interface.

NONE:

Do not output acoustic grid participation for any structural grid points.

SID:

Output acoustic grid participation factors for a set of grids. SID refers to the ID of a SET of type GRID.

setfl

<ALL, NONE, SID>

Default = ALL

ALL:

Output acoustic grid participation for all fluid grid points at the fluid-structure interface.

NONE:

Do not output acoustic grid participation for any fluid grid points.

SID:

Output acoustic grid participation factors for a set of grids. SID refers to the ID of a SET of type GRID.

setf

<ALL, SID>

Default = ALL

ALL:

Participation factors are processed for all excitation frequencies.

SID:

Participation factors are only processed for a set of excitation frequencies. SID refers to the ID of a SET of type FREQ.

ipower

<INTEGER>

Default = 30

When the magnitude of a grid participation is below 10 to the minus ipower, the grid participation will not be output. Therfore, if the grid participation is less than 10-ipower, the result output for this grid will be skipped.

rval

<REAL>

Default = 0.0

The grid participation will be calculated at the excited frequencies when the magnitude of the pressure is above rval. The excitation frequency will be a subset of setf.

rpdba

<Non-Negative REAL>

Default = 0.0

RPDBACUT is the decibel pressure cutoff value for fluid responses, and is similar to RPCUTOFF. It will take precedence over RPCUTOFF for fluid responses. A weighting is applied to RPDBACUT values at the excitation frequency. The grid participation will be calculated when the magnitude of the response is about the cutoff value. See comment 4 for decibel calculations and reference pressure settings.

CONTOUR

(YES/NO)

Default = YES

If YES, the area projected value for the fluid grid participation is output. Otherwise, the output of fluid grid participation would be the actual complex value.

PEAKOUT

If PEAKOUT is present as an option inside the parenthesis of the PFGRID data, the filtered frequencies from the PEAKOUT data will be considered for output of grid participation.

setdof/PEAKOUT

<SID/PEAKOUT>

Degrees-of-freedom for which the grid participation factors are to be processed. SID refers to the ID of a SET of type GRID. If PEAKOUT is specified instead of SID, the output will be considered at the filtered frequencies corresponding to the degree of freedom in the PEAKOUT card in the bulk section.