×
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

failure for hyperelastic material

failure for hyperelastic material

failure for hyperelastic material

(OP)
Dear all,

I am modeling something using hyperelastic material model.  Could someone tell me how to define the material failure?  I looked up in "failure tensile; shear failure" etc., but they only apply for either plastic or elatic.  Does abaqus support material failure model for the hyperelatic materials?

Thanks all.

RE: failure for hyperelastic material

Hi jisb007;

Failure in hyperelastic testing is pretty straightforward:

In uniaxial (simple) tension, it is the breaking of the specimen.

In pure shear (planar tension), it often is also the breaking of the specimen, HOWEVER, the specimen will typically break at the grips. An additional problem is that, once the width:height ratio of the test specimen is no longer greater than 10:1, it's not really pure shear anymore, so, in a way, the test 'should' end when we're no longer measuring pure shear.

In equal biaxial extension, failure cannot be measured (since the highest stresses are in the tabs, not in the effective gage area)

In simple compression, there really is no such thing as failure; you compress the material as hard as you can, until you / your test frame / your load cell runs out of force.

OK, so that's a little more difficult than I made it sound in the first line of my post... I guess I haven't really heard of elastomers being used for destructive applications, so failure isn't an issue nearly as often as it is for plastics or metals etc.

Hope I helped, sorry if not...

Ron

RE: failure for hyperelastic material

(OP)
Hi rtmpxr,

Thanks, but the link doesn't work??  

RE: failure for hyperelastic material

It seems it's something wrong out there. There is a html version of the article. Do a search on google using "hyperelasticity failure criteria" and look for the link I sent you.

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

White Paper - PLM and ERP: Their Respective Roles in Modern Manufacturing
Leading manufacturers are aligning their people, processes, and tools from initial product ideation through to field service. They do so by providing access to product and enterprise data in the context of each person’s domain expertise. However, it can be complicated and costly to unite engineering with the factory and supply chain. 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