×
INTELLIGENT WORK FORUMS
FOR ENGINEERING PROFESSIONALS

Contact US

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.

Students Click Here

Movement of sliding block in FEM slope stability

Movement of sliding block in FEM slope stability

Movement of sliding block in FEM slope stability

(OP)
Hi all,

I have one question regarding the movement of sliding block in FEM analysis.

Perhaps, most of you knew the famous paper of Griffths et al. (1999) where he applied FEM for slope stability analysis. In this paper, he carried out the tests for a homogeneous slope with and without foundation layer. Results gave similar safety factor but there is significant difference about the movement of the sliding block after the slope failure. Based on the meshed distortion in his paper, one could see that large displacement was observed for the slope with foundation layer and there is a toe failure in this case too.

The problem is that I recently applied mesh-free method to simulate slope collapse after failure. I tested the same problem and found different results regarding the movement of the sliding block. The sliding block in my test was larger for the case without foundation layer. I performed some further tests and found that the movement of the sliding block was significantly influence by the toe failure. This means that the sliding block will soon stop after failure if there is a toe failure. On the other hand, the sliding block will slide freely along the potential slip surface if there is no a toe failure.

These results are very different from FEM where sliding block can slide freely along the slip surface regardless of the toe failure. It is note that there is no update mesh in FEM.

Could someone help me to explain why this happens? Should FEM has any problems in this situation since the grid structure was completely distorted?

Thank you very much in advance!





 

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

Low-Volume Rapid Injection Molding With 3D Printed Molds
Learn methods and guidelines for using stereolithography (SLA) 3D printed molds in the injection molding process to lower costs and lead time. Discover how this hybrid manufacturing process enables on-demand mold fabrication to quickly produce small batches of thermoplastic parts. Download Now
Design for Additive Manufacturing (DfAM)
Examine how the principles of DfAM upend many of the long-standing rules around manufacturability - allowing engineers and designers to place a part’s function at the center of their design considerations. Download Now
Taking Control of Engineering Documents
This ebook covers tips for creating and managing workflows, security best practices and protection of intellectual property, Cloud vs. on-premise software solutions, CAD file management, compliance, and more. 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