×
INTELLIGENT WORK FORUMS
FOR ENGINEERING PROFESSIONALS

Log In

Come Join Us!

Are you an
Engineering professional?
Join Eng-Tips Forums!
  • Talk With Other Members
  • Be Notified Of Responses
    To Your Posts
  • Keyword Search
  • One-Click Access To Your
    Favorite Forums
  • Automated Signatures
    On Your Posts
  • Best Of All, It's Free!
  • Students Click Here

*Eng-Tips's functionality depends on members receiving e-mail. By joining you are opting in to receive e-mail.

Posting Guidelines

Promoting, selling, recruiting, coursework and thesis posting is forbidden.

Students Click Here

Jobs

Different results between Abaqus Script and GUI

Different results between Abaqus Script and GUI

Different results between Abaqus Script and GUI

(OP)
Hello everybody,

Using Abaqus 6.11 for a classic mechanical study of an assembly (3 parts), i'm facing an issue and i cannot find the solution online.

My problem is the following:

As i'm dealing with a lot of simulations i'm gathering all the results (VonMisesMax, Max Principal Stress max) from odb files into a text file using a script highly inspired from this one :
http://abaqusdoc.ucalgary.ca/books/cmd/pt05ch09s10...

The issue is that the value given by this script for the VonMisesMax is different from the value given by ABAQUS using the graphic interface when I ask it to auto-calculate the maximum value of VonMises. (i have the same issue for max principal stress)

I'm a little bit lost because I have no idea which value to trust in my study.

Thank you for your help thumbsup2

RE: Different results between Abaqus Script and GUI

The difference might come from the location where the value is taken from.

In the Viewer you'll see a value that is extrapolated from the integration points to the nodes and then averaged.
In the script you'll probably just have the values from the integration points. No extrapolation, no averaging.

RE: Different results between Abaqus Script and GUI

The script looks like its querying element-wise values so in principle it should be using the interpolated values.

I would have a look at the script file generated by Abaqus when using the GUI against the script you are using & see what differences exist in the query commands.

If you are looking at certain elements there may be a numbering issues between Python & CAE, seem to remember a colleague having such issues once.

Red Flag This Post

Please let us know here why this post is inappropriate. Reasons such as off-topic, duplicates, flames, illegal, vulgar, or students posting their homework.

Red Flag Submitted

Thank you for helping keep Eng-Tips Forums free from inappropriate posts.
The Eng-Tips staff will check this out and take appropriate action.

Reply To This Thread

Posting in the Eng-Tips forums is a member-only feature.

Click Here to join Eng-Tips and talk with other members!


Resources