Linearized Stress Values from SCLs

[anthony-walker]

Is it possible to reference SCLs by name and extract linearized stresses from these points for all along the SCL and all times?

[RobPasMue]

Hi @anthony-walker! To better redirect your question, could you please provide some context on the Ansys product that you are using? I believe it would be Ansys Mechanical, but I want to confirm first.

[anthony-walker]

@RobPasMue It is ansys mechanical.

[RobPasMue]

@ansys/pymechanical-maintainers could you please support this user?

[koubaa]

It is possible. This feature is called "Linearized Stress" in Ansys Mechanical. Apparently there is a free addon that will automatically do this for pressure vessels, but I don't know exactly what it does.

[anthony-walker]

@koubaa I appreciate the response. I am looking to do this through pyansys using the results file. I want to reference already created SCLs and extract the linearized stresses programmatically. I don't believe the suggested addon will work for that.

[koubaa]

@anthony-walker For advanced post-processing with the MAPDL result file I would suggest looking at pydpf.

[anthony-walker]

@koubaa I have been using pydpf but I haven't found a great way to reference already created. SCLs I figured this discussion may help lead me too that.

[koubaa]

Hi Anthony, sorry for the delay. In the Mechanical UI, a linearized stress must select a path using a dropdown by name. The same can be done with scripting. Unfortunately, there isn't a direct script API to get the values of the linearized stress (these are presented in the tabular data grid in the UI), but a workaround does exist. You can sue result.ExportToTextFile("/path/to/file.csv") and parse the csv file for whatever information you need.

[anthony-walker]

@koubaa I am not seeing an ExportToTextFile method, which pyansys module is this in?

[koubaa]

@anthony-walker it's part of Mechanical Scripting, which PyMechanical gives access to.

[anthony-walker]

@koubaa can you provide a bit more information or point me to some examples/docs? The documentation I have come across seems to be lacking in describing how to connect to an existing mechanical session and get access to the result object your reference.

[anthony-walker]

@koubaa This also doesn't seem to be easily manipulated to capture data at multiple load/substeps

[dipinknair]

@anthony-walker https://catalog.ansys.com/product/5eb9b19c393ff65f64e331bc/linearized-stresse
let me know if this helps