×
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

High Artificial Energy (ALLAE) in Abaqus Explicit analysis

High Artificial Energy (ALLAE) in Abaqus Explicit analysis

High Artificial Energy (ALLAE) in Abaqus Explicit analysis

(OP)
Hello everybody,

I am doing such a kind of FE simulation using ABAQUS Explicit for composite delamination analysis. In this case, I have used once Cohesive Zone Element (CZM) and then with Cohesive Surface for deboning analysis

The simulation is itself quite dynamic process, somehow the deformation time is only around 3[ms] and the deformation speed is around 5[m/s].

I used the same characteristics for both CZM and Cohesive Surface description. Enhanced Hourglass was also used for Element Control.

The problem is as below:

The resulting Artificial Energy (ALLAE) for Cohesive Surface assumption is so high; around 70% of ALLIE; while for CZM model is just around 1% which seems correct.

Does somebody have any idea about the reason behind that? I would be happy to let me know if you have and hints or solution for that.

Thanks in advance,

RE: High Artificial Energy (ALLAE) in Abaqus Explicit analysis

Scale up the deformation and see if you have hourglassing in your structure.

Scale the hourglassing factor down in another analysis and check the results again.

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