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INITIAL CONDITIONS
9.18
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INITIAL CONDITIO NS: Specify initial conditio ns for the model.
This option is used to pre scribe initial c onditions for an analysis.
Products: ABAQU S/Standard ABAQUS/Explicit ABAQUS/Aqua
Type: Model data
Level: Model
Reference:
•
“Initial conditions,” Section 27.2.1 of the ABAQUS Analysis User’s Manual
Required parameters:
TYPE
Set TYPE=ACOUSTIC STATIC PRESSURE to define initial static pressure values at acoustic
nodes for use in eva luating the cavitation status of the acoustic element nodes in ABAQUS/Explici t.
Set TYPE=CONCENTRATION to give initial normalized concentrations for a mass diffusion
analysis in ABAQUS/Standard.
Set TYPE=CON TA CT to specify initial bonded contact conditions on part of the slave surface
identified by a node set in an ABAQUS/Standard analysis.
Set TYPE=FIELD to specify initial values of field variables. The VARIABLE parameter can
be used with this parameter to define the field variable number. The STEP and INC parameters can
be used in conjunction with the FILE parameter to define initial values of field variables based on
the tem perature record of a results file from a previous ABAQUS/Standard heat transfer analysis.
Set TYPE=FLUID PRESS URE to give initial pressures for hydrostatic fluid filled cavities.
Set TYPE=HARDENING to prescribe initial equivalent plastic strain and, if relevant, the
initial backstr ess tensor or to pres cribe initial volumetric compacting plas tic strain f or the crushable
foam model. In ABAQUS/Standard the REBAR and USER parameters can be used with this
parameter. Ifthe USER pa rameter is omitted, ABAQUS/Standard assumesthatthe initialconditions
are defined on the data lines.
Set TYPE=INITIAL GAP to identify the elements within which tangential fluid flow exists
initially.
Set TYPE=MASS FLOW RATE to specify initial values of mass flow rates in
ABAQUS/Standard heat transfer analyses involving forced convection modeled with the
forced convection/diffusion heat transfer elements.
Set TYPE=PLASTIC STRAIN to specify initial plastic strains. The SECTION POINTS
parameter can be used with this param eter. It is assumed that the plastic strain components are
defined on each data line in the order given for the element type, as defined in Part VI, “Elements,”
of the ABAQU S Analysis User’s Manual.
9.18–1
ABAQUS Version 6.1 Module:
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