×
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

Contact and too big plastic deformation

Contact and too big plastic deformation

Contact and too big plastic deformation

(OP)
Hello everybody,

I want to observe the plastic deformation after a contact between a ball and an other mechanical part.

You can see my model here:

http://imageshack.com/a/img837/379/kgl5.jpg
http://imageshack.com/a/img707/4646/eghb.jpg

I have results of experiences and I want to compare this results with the results of the simulation with Abaqus.

The problem is that these two results are really differents.

In the reality, if I press the ball on the part with 120kN, I have a CPRESS of 3600MPa and the plastic deformation after this press is 15µm.

With Abaqus, the CPRESS is no so bad, but the plastic deformation is very big: 230µm.

I think the problem is the definition of the normal contact in my model, but I can't find a configuration that gives me smaller plastic deformation.

Here is a little summary of my model:

-Elastic plastic material (I have strain-stress curve of it)
-Isotropic hardening
-frictionless tangential behaviour
-normal behaviour -> ? I try different configuration (penalty, lagrange) but it doesn't work

If you have an idea for my problem, it would be helpfull!

Thank you.

Polo.

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