×
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!

*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

crack propagation in abaqus cae

crack propagation in abaqus cae

crack propagation in abaqus cae

(OP)
Howdy.
I have been able to model a crack and get accurate SIF values... but does anyone know how to propagate a crack using CAE?  Cheers.

RE: crack propagation in abaqus cae

Do you mean fatigue crack growth? da/dN?
 I think in abaqus, you can model the different crack length and find the J-integral corresponding. Then, using fatigue criterion to make comparsion with experimental results.

RE: crack propagation in abaqus cae

The crack propagation in ABAQUS is based on the node release approach. You define a pair of surfaces in similar manner to contact modeling. Initially the surfaces are bonded. As the propagation criterion is fulfilled ( COD or critical stress) the nodes of the 2 surfaces will be released.

The steps to model crack propagation are explained in the documentation. For v6.5 see
ABAQUS Analysis User's Manual  -> 7.9.3 Crack propagation analysis

RE: crack propagation in abaqus cae

(OP)
I'm working with a static load (not cyclic).  I want to model the crack propagation so that I can plot a load versus crack growth curve.  My current model has a circlular face partition (instance) around the initial crack tip so that I could have the collapsed quarter-point elements.  I figure there must be some way to propagate the crack and have the mesh move with it?  Or, am I better off using Patran for my pre-processing and just use ABAQUS/Standard?  I'm relatively new to this, so I'm pretty much the novice.  Thanks!

RE: crack propagation in abaqus cae

The crack propagation in ABAQUS does not feature automatic remeshing during propagation.

The crack can propagate only along a "known" path, modeled as bonded contact surfaces. For more details and examples, please see the ABAQUS documentation.



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! Already a Member? Login


Resources

eBook - The Future of Product Development is Here
Looking to make the design and manufacturing of your products more agile? For engineering and manufacturing organizations, the need for digital transformation of product development processes just became more urgent than ever so we wanted to share an eBook that will help you build a practical roadmap for your journey. Download Now

Close Box

Join Eng-Tips® Today!

Join your peers on the Internet's largest technical engineering professional community.
It's easy to join and it's free.

Here's Why Members Love Eng-Tips Forums:

Register now while it's still free!

Already a member? Close this window and log in.

Join Us             Close