Importing temperatures into Abaqus

[SabinSnorlax]

Hi all!

From a separate program I have temperatures for each node in my model for different time steps. These are saved in .ntl files, apparently related to Nastran. These files are very simple, basically just a headline and then just node number / temperature pairs.

I would like to import these temperatures into Abaqus, so as to look at thermal stresses changing over the time steps.
As far as I can tell, it is possible to import temperatures from either a .odb or a .fil file. Unfortunately, I have no idea how a .fil is supposed to look like so that the import works.

Could anyone please give me some information on this? Ideally a dummy .fil would be great. Alternatively, I guess I could give UTEMP a try, but I would rather just go for some simple import if possible.

Thanks in advance!
Sabin

 

[Mustaine3]

The temperature boundary conditions can be added via *Temperature.

When the format of the file content fits the Abaqus syntax, then you can easily refer to that file with *Include.

 

[SabinSnorlax]

Dear Mustaine,
Many thanks!
Could you please let me know how to find the "proper" Abaqus syntax that would allow a simple reference?
Sorry for being quite a noob, just doing these calculations as a quick side project.
Cheers!

 

[Mustaine3]

Here is a very simple example.

Prepared in A/CAE and modified in the .inp.

 

[SabinSnorlax]

Exactly what I was looking for! Thanks again!

 

[SabinSnorlax]

I have been trying to get the import to work recently, but have not managed so far...

If I run the job, in the .dat file I get a lot of errors along the lines of

***ERROR: in keyword *TEMPERATURE, file "job.inp", line 6248442:
Unknown assembly id 1.
***NOTE: DUE TO AN INPUT ERROR THE ANALYSIS PRE-PROCESSOR HAS BEEN UNABLE TO
INTERPRET SOME DATA. SUBSEQUENT ERRORS MAY BE CAUSED BY THIS OMISSION

And then basically this error gets repeated over and over for all nodes.

The .inc file is written as "node, temperature" for all nodes.

I was now wondering whether the nodes were perhaps not defined properly since I am working with an assembly and not just one part?

 

[Mustaine3]

If you have a part- & assembly-structure in your odel, then you have to respect these namespaces and use them also in the include file.

Or you can deactivate that CAE writes that format. See Model > Edit Attributes > Do not use parts and ....