*STATIC
18.31 *STATIC: Static stress/displacement analysis.
This option is used to indicate that the step should be analyzed as a static load step.
Product: ABAQUS/Standard
Type: History data
Level: Step
References:
•“Static stress analysis,” Section 6.2.2of the ABAQUS Analysis User ’sManual
•“Unstable collapse and postbucklinganalysis,” Section 6.2.4 of the ABAQUS Analysis User’s Manual
•“Adiabatic analysis,” Section 6.5.5 of the ABAQUS Analysis Use r’sM anual
•“Solving nonlinear problems,” Section7.1.1 of the ABAQUS Analysis User’s Manual
•“Deformation plasticity,”Section 18.2.13 of the ABAQUS Analysis User’s Manual
No parameters or data lines are used in a linearper turbationanalysis.
Optional parameters for a general static analysis:
ADIABATIC
Include this parameter to perform an adiabatic stressanalysis. This parameter is relevant only for
isotropic metal plasticity materials with a Mises yield surface and when the *INELASTIC HEAT
FRACTION option has been specified.
DIRECT
This parameter selects direct user control of the incrementation through the step. If this parameter
is used, constant increments of the size defined by the first item onthe data line are used. If this
parameter is omitted, ABAQUS/Standard will choose the incre ments (after trying the user’s initial
time increment for the first attempt at the first increment).
The parameter can have the value NO STOP. If this value is included, the solution to an
increment is accepted after the maximum number of iterations allowed has been completed (as
defined by the *CONTROLS option), even if the equilibrium tolerances are not satisfied. Very
small increments and a minimum of two iterations are usually necessary if this value is used. This
approach is not recommended; it should be used only in special cases when the analyst has a
thorough understanding of how to interpret results obtained in this way.
FACT OR
Set this parameter equal to the damping factor to be used in the automatic damping algorithm
(see “Solving nonlinear problems,” Section 7.1.1 of the AB AQUS Analysis User’s Manual) if the
problem is expected to be unstable due to local instabilities and the damping factor calculated
18.31–1
ABAQUS Version 6.1 Module: ID:
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