×
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

Damge progression in material

Damge progression in material

Damge progression in material

(OP)
Dear abaqus users,
In terms of damage progression in abaqus/standard, do we need a predefined path? Thanks.

Regards,
Vicky

RE: Damge progression in material

Hi vicky,
i guess you want to model crack propogation. If you deal with isotropic Material model and under unidirectional testing you can do that and this the easiest failure creteria. How everything, if you are dealing with composites original nonhemogenous Material your intrest is to find how and in which direction the crack propegates. I how this help.

RE: Damge progression in material

If you are using XFEM in Abaqus then you need to have an idea of where the crack will form so you can enrich that area. To do that run the model with no XFEM elements and look for the areas of highest Von Mises Stress and enrich those elements for the XFEM run.

If you are looking at just damage then as long as your material models contain failure and damage evolution criteria you dont need to predefine the path.

RE: Damge progression in material

(OP)
Thank you for your responses. I defined the damage criterion in the UMAT and once the damage occurred the stiffness of reduced to a nearly zero value. It seems that due to the small stiffness the damage element will have large distortion and causing problem of the calculation. DO you guys know what should I do?

RE: Damge progression in material

Hallo,
Please ready about element revol Priesters which can be Found.the in dynamic analysis in abaqus.

RE: Damge progression in material

(OP)
Thanks Iimoko,
Any idea about solution in static analysis in abaqus?

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