August 14, 2018 at 3:19 pm
August 15, 2018 at 12:22 amSandeep MedikondaAnsys Employee
How are you setting up your model in Workbench and Mechanical? It doesn't look like you are using the additive wizard?
August 15, 2018 at 12:26 am
August 15, 2018 at 12:41 amKellen.traxelSubscriber
Yes I do not have the additive package with my license, although I did install the extension when I first started running ANSYS. I am confused why it now is calling that function when I have not activated any aspect of that extension. To ensure this fact, I removed the extension from ANSYS and I am still getting the same error in my solution information file. Any suggestions? The problem is when I set up radiation on the top surface of my model.
August 15, 2018 at 12:42 amKellen.traxelSubscriber
If I suppress radiation, the model solves, albeit inaccurately.
August 15, 2018 at 4:26 pmSandeep MedikondaAnsys Employee
I am struggling to understand, how you are setting up your model and what you are doing. May be a few snapshots will help?
August 15, 2018 at 5:15 pm
August 15, 2018 at 10:49 pmSandeep MedikondaAnsys Employee
The error is very likely because of the unsupported version of your software.
Now, on a different note, how is this an Additive simulation? I don't see any printing or AM related commands. It looks to me that you are coupling a transient thermal analysis with a structural simulation.
Please see this thread and on a workbench additive simulation.
August 15, 2018 at 11:28 pmKellen.traxelSubscriber
I don't have access to the additive suite with my software version, and thus I am not using any AM-related commands (which is why I am puzzled by the error). Instead, I am using a moving heat flux in a transient thermal analysis and inputting the temperature distribution into the structural model to get the stress at each point in the simulation (for a single layer deposit of material). Is this an adequate approach for a single-layer simulation without using the Additive addin?
Even though I had previously installed the Additive ACT tool to see if my license could use any aspects, I never input any additive commands into my final model as I knew that it would not solve. I have since uninstalled the addin but am still getting the same error, so I am wondering if there migh be a quick fix, or I need to rebuild my model?
In the meantime, I ran a separate test simulation with a simple box radiating to ambient environment from 500K, and recieved no errors.
So this leads me to believe that the error is stemming from how my current simulation is setup. Any suggestions on debugging/my overall strategy?
August 16, 2018 at 1:13 amSandeep MedikondaAnsys Employee
I don't think additive by default even writes our this command to the ds.dat file. I quickly ran an additive case that I had open and double checked this.
Now the command itself according to the manual is placed when:
You can use this command in the general preprocessor (PREP7) and in the Solution processor to specify the Stefan-Boltzmann constant in analyses using the radiation matrix method or the radiosity solver to model radiation.
So, it is being inputted from somewhere and the manual says that it can be input in one of these ways:
So, please check the possible causes. Note that it will be helpful to open the ds.dat file corresponding to this error file and look for its location. It might give you some insight. I am assuming that since you are using the MovingHeat ACT may be it is placed somewhere in the apdl code used by this extension, check if the inp files that this is using is calling for this command. Are you using the same ACT extension for the simple case as well?
Lastly, if you completely want to eliminate the possibility of your previous ACT doing something here. Go to this folder:
and rename the folder with the version you are using, say, v191, to something else like v191.old. Then relaunch ansys and try again.
Hope this helps.
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