Displacement Output Request
Description: Requests displacement vector output.
Format:
Example:
DISPLACEMENT = ALL
| Option | Definition | Type | Default |
|---|---|---|---|
| Grid point displacements will be output to both the Model Results Output File and the results neutral file system. | Character | ✓ | |
| PLOT | Grid point displacements will be output only to the results neutral file system. | Character | |
| PUNCH | Grid point displacements will be output additionally to the Model Results Punch File. | Character | |
| REAL or IMAG | Requests complex output in rectangular format (real and imaginary). | Character | ✓ |
| PHASE | Requests complex output in polar format (magnitude and phase). Phase output is in degrees. | Character | |
| PSDF | Power spectral density function, RMS, and number of positive crossings output request. | Character | |
| ABS | Requests output as absolute displacement (see Remark 3). | Character | ✓ |
| REL | Requests output as relative displacement (see Remark 3). | Character | |
| ATOC | Autocorrelation function output request. | Character | |
| RALL | Both PSDF and ATOC will be output. | Character | |
| ALL | Displacements for all grid points will be output. | Character | ✓ |
| n | Set identification of previously appearing SET command. Only displacements of grid points whose identification numbers appear on this SET command will be output. | Integer > 0 | |
| NONE | Grid point displacements will not be output. | Character |
Remarks:
- DISPLACEMENT results are output in the global coordinate system. (See CD field on the GRID Bulk Data entry in Section 4, Bulk Data.)
- The translation components are in the same units of measure as the model. The rotation components are in radians.
- Relative displacement output is only applicable to modal transient and linear direct transient response solutions. The reference point for relative motion is defaulted to the direct enforced motion input point. When direct enforced motion is not specified the point with the largest mass in the model is used. The reference point may be specified explicitly using the DYNSOLRELGRID model parameter. See Section 5, Parameters, for more information on DYNSOLRELGRID.