×
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

Material defect

Material defect

Material defect

(OP)
Hi guys,
Does someone has experience in modelling a material defect as shown on the photo. My boss asked me if it's possible to model such a defect and check its impact.
Do you konow if there is a possibility to model such a thing in femap and how to do it (we have basic license) or if there is even a sense to model this.

Thank you for any reply!

RE: Material defect

I have seen very high fidelity crack growth models, but I don't think you can do something like that with basic FEMAP/Nastran. (I could be wrong.)

The only reasons to model something like that are 1)to show that it is good to use, or to use with a limited life; or 2) it has failed and someone wants to make the lawyers happy?

I think trying to use a part like that with such a obvious defect is probably a bad idea unless it is really lightly loaded and won't matter if it fails.

That's what scrap piles are for.

If you know the stresses on that part, you can find a stress concentration approximation using Peterson's and that will probably give you a reasonably accurate answer (although that answer will probably not make your boss happy).

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