×
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

Crushable Foam Model Calibration

Crushable Foam Model Calibration

Crushable Foam Model Calibration

(OP)
Hi,

I am currently facing difficulties in calibrating abaqus crushable foam model with my experimental results.
I think I am bit confused about what values needs to be input in the model.
Right now my elastic properties are: E=400 MPa, v=0 (because its crushing)
In plastic under crushable foam I use compression yield stress ratio =1
and hydrostatic yield stress ratio =0.1.

Under crushable foam hardening card (Here I am confused), I convert the engineering stress to true stress using

(T.stress=E.Stress(1+E.strain))

and I convert the engineering strain to first true strain using

(T.strain=ln(1+E.strain)) and then to plastic strain using

P.Strain = T.strain - Yield Stress/E

So in short, I input True Stress and Plastic strain in the Hardening table.

1) Is this procedure right or am I approaching wrongly?

2) What do I need to extract from Abaqus in terms of Stress and Strains to compare with my experimental data ? (do I need to plot PE22 and S22?)

Please guide me in this regards.

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