×
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

Cohesive element/surface non-perpendicular loaded

Cohesive element/surface non-perpendicular loaded

Cohesive element/surface non-perpendicular loaded

(OP)
Hi all,

I'm working on a 2D model in Abaqus 6.11.2 with a cohesive surface in it.
This cohesive surface has the shape of a quarter circle.

Due to this shape the cohesive surface is loaded from perpendicular (90 degrees angle) to parallel (0 degrees angle) to the surface.
However the model does not respond as i expected.

After some simple examples i found out that the cohesive surface defenition of mine does give incorrect results when the surface is loaded non-perpendicular.
I also tried adding a cohesive element (with a zero-thickness) instead of a cohesive surface, however this cohesive element also only gives correct results under perpendicular loading conditions.

Can someone please give some advise on the input for cohesive elements/surfaces with non-perpendicular loading?
The input files of my models (with a cohesive element and with a cohesive surface is added).

I'm currently using the following properties for my cohesive surface interaction:

__________________________________________________
** INTERACTION PROPERTIES
**
Surface Interaction, name=Interaction
1.,
*Cohesive Behavior, eligibility=ORIGINAL CONTACTS
0.1, 0.1, 0.1
*Damage Initiation, criterion=QUADS
2.5e-05, 2.5e-05, 2.5e-05.
*Damage Evolution, type=ENERGY, mixed mode behavior=POWER LAW, power=1.
0.0005, 0.0005, 0.0005.
*Damage Stabilization
1e-07
__________________________________________________

The traction-seperation behavior of the cohesive is supposed to look the following:

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