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!

*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.

Jobs

geogrid in soil using Abaqus 6.13

geogrid in soil using Abaqus 6.13

(OP)
Hi everyone, i am new ! i need to model a pullout test of a geogrid embedded in a sandy soil. i am worried about the interaction to set.
i red in literature to give two times contact pair to simulate the interaction between ggr-soil (ggr face down-up face of soil under and ggr face up- down face soil above) using a penalty interactoin (μ=0.4). how can i set the soil-to-soil contact ? i could use constraint, tie but am am not complety sure on the way i am walking... i use 3D stress element for the soil and membrane elements for the ggr both with linear elastic behaviour.
Thank for your help ! bowright

RE: geogrid in soil using Abaqus 6.13

Hi,

I'm not sure of the details of interface elements in Abaqus, but I have modeled the pullout of geogrids using Plaxis.

In plaxis the geogrid is modeled as a continuous element (i.e. doesn't model the gaps between the grids), so there is an geogrid/soil interface above and below the geogrid. I extend the interface a short distance beyond the grid to the end of the grid can displace relative to the soil. The soil to soil contact has the full soil strength.

The best way is to get the interface strengths for the model is to calibrate the performance against an actual pullout test. Adjust the interface strengths to give the pullout strength measured in the test.

Hope this helps a little or at least provides some insight,

Martin

RE: geogrid in soil using Abaqus 6.13

(OP)
hi martin,
thanks for the time you spent finding a solution to my problem !
i found a solution that satisfies my goals. i don't have test to refear on, so i have done with it !
best 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


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