PSDUNIT

PSDUNIT, TBLNO, Type, GVALUE
Defines the type of input PSD.

SOLUTION: Spectrum Options
Compatible Products: – | – | Premium | Enterprise | Ent PP | Ent Solver | –

TBLNO

Input table number.

Type

Label identifying the type of spectrum:

DISP  

 — 

Displacement spectrum (in terms of displacement2/Hz ).

VELO  

 — 

Velocity spectrum (in terms of velocity2/Hz ).

ACEL  

 — 

Acceleration spectrum (in terms of acceleration2/Hz ).

ACCG  

 — 

Acceleration spectrum (in terms of g2/Hz ).

FORC  

 — 

Force spectrum (in terms of force2/Hz ).

PRES  

 — 

Pressure spectrum (in terms of pressure2/Hz ).

GVALUE

Value of acceleration due to gravity in any arbitrary units for Type=ACCG. Default is 386.4 in/sec2.

Command Default

Acceleration (ACEL) spectrum (acceleration2/Hz).

Notes

Defines the type of PSD defined by the PSDVAL, COVAL, and QDVAL commands.

Force (FORC) and pressure (PRES) type spectra can be used only as a nodal excitation.

GVALUE is valid only when type ACCG is specified. A zero or negative value cannot be used. A parameter substitution can also be performed.

This command is also valid in PREP7.

Menu Paths

Main Menu>Preprocessor>Loads>Load Step Opts>Spectrum>PSD>Settings
Main Menu>Solution>Load Step Opts>Spectrum>PSD>Settings

Release 18.2 - © ANSYS, Inc. All rights reserved.