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Display the temperature boundary condition editor using one of the
following methods:
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If a Method field appears toward the top of the
editor, click the arrow to the right of the field, and select one of the
following:
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Select Specify magnitude if you want to
specify a value for the temperature.
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Select Fixed at current magnitude if you want
to fix the temperature magnitude at its final value from the previous general
step.
The Method option appears in the editor only if
both methods are valid for the selected step.
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If a Distribution field appears in the editor,
click the arrow to the right of the field, and select one of the following:
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Select Uniform to define a uniform boundary
condition.
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Select User-defined to define the boundary
condition in user subroutine
DISP. See the following sections for more information:
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Select an analytical field to define a spatially varying boundary
condition. Only analytical fields that are valid for this boundary condition
type are displayed in the selection list. Alternatively, you can click
to create a new analytical field. (See
The Analytical Field toolset
for more information.)
The Distribution option appears in the editor
only if you are creating the boundary condition or editing the boundary
condition in the step in which it was created. This option is unavailable if
you select the Fixed at current magnitude method.
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If you selected the Uniform or analytical field
distribution option, perform the following steps:
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If applicable, enter the temperature magnitude in the
Magnitude field.
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If applicable, click the arrow to the right of the
Amplitude field, and select the amplitude of your choice
from the list that appears. Alternatively, you can click
to create a new amplitude. (See
The Amplitude toolset
for more information.)
Note:
The Magnitude and
Amplitude fields are unavailable if you are creating the
boundary condition in the initial step (in which case the magnitude is always
zero) or are fixing the magnitude at its final value from the previous analysis
step.
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If you selected the User-defined distribution
option, perform the following steps:
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If desired, enter the temperature magnitude in the
Magnitude field. Magnitude data that you enter in the
editor are passed into the user subroutine.
(The Magnitude field is unavailable if you
are creating the boundary condition in the initial step.)
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Click OK to save any entered data and to exit
the editor.
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Enter the
Job module,
and display the job editor for the analysis job of interest. (For more
information, see
Creating, editing, and manipulating jobs.)
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In the job editor, click the General tab, and
specify the file containing the user subroutine that defines the boundary
condition. For more information, see
Specifying general job settings.
Note:
You can specify only one user subroutine file in the job editor;
if your analysis involves more than one user subroutine, you must combine the
user subroutines into one file and then specify that file.
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If a shell region is selected, enter the temperature degrees of
freedom that you want to specify in the Degrees of freedom
field. For information on how shell temperature degrees of freedom are labeled,
see either “Heat transfer
shell elements” or
“Coupled
temperature-displacement shell elements” in
Choosing a Shell Element.
You can enter multiple degrees of freedom, from 11 to 31, inclusive,
by separating each number with a comma. For example, if you want to specify
degrees of freedom 11, 12, and 13, you must enter the
following:11,12,13
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Click OK to save your data and to exit the
editor.
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