Two-Way Radio User Manual

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SRADIATE
18.30
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SRADIATE: Specify surface radiation conditions in heat transfer analysis.
This option is used to apply surface radiation boundary conditio ns between a nonconcave surface and a
nonreflecting environment in fully coupled thermal-stress a nalysis. In ABAQUS/Standard it is also used
for heat transfer and coupled thermal-electrical analyses.
It must be used in conjunction with the
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PHYSICAL CONSTANTS option, which is used to define the
Stefan-Boltzm ann constant.
Products: ABAQUS/Standard ABAQUS/Explicit
Type: History data
Level: Step
Reference:
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“Thermal loads,” Section 27.4.4 of the ABAQUS Analysis User ’s Manual
Optional parameters:
AMPLITUDE
Set this param eter equal to the name of the
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AMPLITUDE option that gives the variation of the
ambient temperature with time.
If this parameter is omitted in an ABAQUS/Standard analysis, the reference magnitude is
applied immediately at the beginning of the step or linearl y over the step, depending on the value
assigned to the AMPLITUDE parameter on the
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STEP option (see “Procedures: overview,”
Section 6.1.1 of the ABAQ US Analysis User’s Manual). If this param eter is om itted in an
ABAQUS/Explicit analysis, the reference magnit ude is applied immediately at the beginning of
the step.
OP
Set OP=MOD (default) for existing
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SRADIATE definitions to remain, with this option modifying
existing radiation conditions or defining additional radiati on conditions.
Set OP=NEW if all existing
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SRADIATE definitions applied to the model should be removed.
Data lines to define surface radiation conditions:
First line:
1. Surface nam e.
2. Radiation type label R.
3. Reference ambient temperature value,
.(Unitsof .)
18.30–1
ABAQUS Version 6.1 Module:
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