ANTYPE, Antype
, Status
, LDSTEP
, SUBSTEP
, Action
, --
, PRELP
Specifies the analysis type and restart status.
Antype
Analysis type (defaults to the previously specified analysis type, or to STATIC if none specified):
STATIC or 0 | — | Perform a static analysis. Valid for all degrees of freedom. |
BUCKLE or 1 | — | Perform a buckling analysis. Implies that a previous static solution was performed with prestress effects calculated (PSTRES,ON). Valid for structural degrees of freedom only. |
MODAL or 2 | — | Perform a modal analysis. Valid for structural and fluid degrees of freedom. |
HARMIC or 3 | — | Perform a harmonic analysis. Valid for structural, fluid, magnetic, and electrical degrees of freedom. |
TRANS or 4 | — | Perform a transient analysis. Valid for all degrees of freedom. |
SUBSTR or 7 | — | Perform a substructure analysis. Valid for all degrees of freedom. |
SPECTR or 8 | — | Perform a spectrum analysis. Implies that a previous modal analysis was performed. Valid for structural degrees of freedom only. |
SOIL or 9 | — | Perform a soil analysis including geostatic stress equilibrium or consolidation. Valid for structural and fluid-pore-pressure degrees of freedom. |
Status
Specifies the status of the analysis (new or restart):
NEW | — | Specifies a new analysis (default). If NEW, the remaining fields on this command are ignored. |
RESTART | — | Specifies a restart of a previous analysis. Valid for static, modal, and transient (full or mode-superposition method) analyses. For more information about restarting static and transient analyses, see Multiframe Restart in the Basic Analysis Guide. For more information on restarting a modal analysis, see Modal Analysis Restart in the Basic Analysis Guide. Multiframe restart is also valid for harmonic analysis, but is limited to 2-D magnetic analysis only. A substructure analysis (backsubstitution method only) can be restarted for the purpose of generating additional load vectors. For more information, see the SEOPT command and Applying Loads and Creating the Superelement Matrices in the Substructuring Analysis Guide. |
LDSTEP
Specifies the load step at which a multiframe restart begins.
For full transient and nonlinear static analyses,
the default is the highest load step number found in the Jobname.Rnnn
files
for the current jobname in the current directory.
For mode-superposition transient analyses, the default is none.
SUBSTEP
Specifies the substep at which a multiframe restart begins.
For full transient and nonlinear static analyses,
the default is the highest substep number found for the specified LDSTEP
in the Jobname.Rnnn
files in the current directory.
For mode-superposition transient analyses, the default is none.
Action
Specifies the manner of a multiframe restart.
CONTINUE | — | The program continues the analysis
based on the specified |
ENDSTEP | — | At restart, force the specified
load step ( |
RSTCREATE | — | At restart, retrieve information
to be written to the results file for the specified load step ( |
PERTURB | — | At restart, a linear perturbation
analysis (static, modal, buckling, or full harmonic) is performed
for the specified load step ( For a linear perturbation analysis, set |
--
Unused field.
PRELP
Flag indicating whether a subsequent linear perturbation will be performed:
YES | — | Specifies the first static analysis
with a sequential linear perturbation analysis. Setting
PRELP = YES is necessary for acoustics-structural interaction linear
perturbation analysis, if the MORPH command
with |
NO | — | No specification for a subsequent linear perturbation (default). |
If using the ANTYPE command to change the analysis type in the same SOLVE session, the program issues the following message: “Some analysis options have been reset to their defaults. Please verify current settings or respecify as required.” Typically, the program resets commands such as NLGEOM and EQSLV to their default values.
The analysis type (Antype
) cannot
be changed if a restart is specified. Always save parameters before
doing a restart. For more information on the different types of restart,
see Restarting an Analysis in
the Basic Analysis Guide.
This command is also valid in PREP7.
Command Option Antype | Available Products |
STATIC | DesSpc | Pro | Premium | Enterprise | Ent PP | Ent Solver | – |
BUCKLE | DesSpc | Pro | Premium | Enterprise | Ent PP | Ent Solver | – |
MODAL | DesSpc | Pro | Premium | Enterprise | Ent PP | Ent Solver | – |
HARMONIC | – | – | Premium | Enterprise | Ent PP | Ent Solver | – |
TRANS | – | Pro | Premium | Enterprise | Ent PP | Ent Solver | – |
SUBSTR | – | – | – | Enterprise | Ent PP | Ent Solver | – |
SPECTR | – | – | Premium | Enterprise | Ent PP | Ent Solver | – |