QUESTION
Defining a temperature in a Workbench Simulation model and writing out an ANSYS input file, one finds that the thermal load is applied as a D command and not as a BF command. It appears that the only way to do calculate thermal stress due to an arbitrary temperature distribution is to request BOTH a thermal analysis AND a structural one, which workbench seems to do automatically when both thermal and structural BC's are applied.
But suppose I wish to apply the temperature distribution (as a body load) in Workbench and skip the thermal analysis. How can this be done?.
ANSWER:
I don't know of a direct way to do this in WB but it would be quite simple using command objects. You can make a named selection of the surface(s) in WB where the bf commands are to be applied. Then in a command object just add the bf commands referencing a nodal component of the same name as the named selection. Here's the procedure I used in a simple case that I tried:
1. Created a named selection of a surface in WB called 'Heat_face'.
2. Added a command object in the Environment with the command BF, Heat_face, TEMP, 100.
3. Wrote the input (or ds.dat) and the BF command was there.
In ANSYS 'Heat_face' will show up as a nodal component. Hopefully that's what he's after.
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QUESTION Defining a temperature in a Workbench Simulation model and writing out an ANSYS input file, one finds that the thermal load is applied as a D command and not as a BF command. It appears that the only way to do calculate thermal stress due to an arbitrary temperature distribution is to request BOTH a thermal analysis AND a structural one, which workbench seems to do automatically when both thermal and structural BC's are applied. But suppose I wish to apply the temperature distribution (as a body load) in Workbench and skip the thermal analysis. How can this be done?. ANSWER: I don`t know of a direct way to do this in WB but it would be quite simple using command objects. You can make a named selection of the surface(s) in WB where the bf commands are to be applied. Then in a command object just add the bf commands referencing a nodal component of the same name as the named selection. Here`s the procedure I used in a simple case that I tried: 1. Created a named selection of a surface in WB called `Heat_face`. 2. Added a command object in the Environment with the command BF, Heat_face, TEMP, 100. 3. Wrote the input (or ds.dat) and the BF command was there. In ANSYS `Heat_face` will show up as a nodal component. Hopefully that`s what he`s after. |
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