Stress Paths in APDL

[chipdipp]

Searched this site for info on how to find the stress along a path within a body using ANSYS APDL and still none the wiser.
I need to use APDL rather than workbench because I am developing a python script that should hopefully conduct and record my analyses automatically. My model is rather basic structure with bolt running down centre, key dimensions alter with each analysis. I want to find stress at midpoint of the bolt so figured a stress path would be best?

Could someone advise me how best to go about this please?
Thankyou

 

[L_K]

Check out the following tutorial.

http://www.mece.ualberta.ca/tutorials/ansys/PP/AdvancedX-SecResults/AdvancedX-SecResults.html

The input file can be found at the bottom of the page.

 

[chipdipp]

Thank-you for the tutorial. It is very helpful, however I wish for my program to run automatically accounting for geometry changes such as bolt length change. This would mean manually changing one of the y coordinates.
Is there a way that I can give a start coordinate and an 'until end of body' or 'through all' type end point?
Thanks

 

[L_K]

Could you post a picture of the setup which shows the variables and the path?

 

[chipdipp]

Certainly. It is a simply bolted flange type arrangement
My apologies for the poor quality sketch, all I can give at the time. The stress path shall be along the bolt length, I am interested in the value at the midpoint of the threaded part of the bolt

There are many variables that change, hence why entering co-ordinates is not ideal.

Thanks

 

[scheah]

Perhaps try building parameters that depends on start coordinate and an 'until end of body' that can be used in PPATH's XYZ arguments.


Best regards,
Jason

 

[andy5powell]

If you want a small number of points I have found using the *Get command and select the node wish you want to start at, and adding a certain amount on every *Get command you use is the easiest for a novice.