×
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

Spider web analysis in abaqus

Spider web analysis in abaqus

Spider web analysis in abaqus

(OP)
Hi all,

I need for my dissertation to create and test a spider-web model. The type of the testing will be static general. To create the radials of the spider web i have used the command wire. The idea is to see how the web reacts under different loading. The model is ready my problem is that when I am trying to submit the job the program doesn't let me because it shows me the error Too many attempts made for this increment. Any Ideas how can i solve it?

Model Description.

Frame: Extruded shell 0.1m*0.1m*0.01m
Spiral: Planar wire
BC: The connections between the radials and the frame are fixed and the connections between the spiral and the radials pinned

Thank you very much in advance
P.Stratos

RE: Spider web analysis in abaqus

With the information provided here is my best guess. Have you assured that all degrees of freedom are constrained to avoid rigid body motion? Remember to check rotations as well. If you use a fixed constraint on the entire model and it solves that provides a hint that we are on the right track. I hope this helps.

Rob Stupplebeen
https://sites.google.com/site/robertkstupplebeen/

RE: Spider web analysis in abaqus

To be specific, and as per Rob's implication, note that, unlike continuum elements, nodes on structural elements (like wires) have both translational and rotational degrees of freedom. You must make sure that rigid body rotations/translations are not allowed. Two ways to find this out:

a) Check your boundary conditions.
b) Open the ODB, go to Job Diagnostics and see if singularities show up as warnings.

http://www.eng-tips.com/faqs.cfm?fid=376

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