×
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

Contact Analyses with Displacement Loading

Contact Analyses with Displacement Loading

Contact Analyses with Displacement Loading

(OP)
Hello everyone,

I've been having some fun recently developing some test models of bolted lap joints that have included a solid bolt and contact between relevant surfaces; for the purposes of learning i'm leaving friction out of the equation for the time being. So far i've found a way to get the solution to converge is to apply a small displacement in the first analysis step to close any gaps, and have a second analysis step where I apply the load of interest (which is one of the solutions proposed in my software package's training material to aid contact convergence issues).

This method, however, appears less effective as the number of fasteners (and hence contact surface pairs) increases. For instance, once I've got 4 fasteners my particular solution will only converge when loading is applied by displacement.

My question is - if the only way the model will converge is with displacement loading, is it just a matter of iterating until I get the displacement that corresponds with the internal load I'm wanting to analyse? Is this valid? Or is it more likely that my contact problem is just ill defined and I'm band-aiding over this problem by applying the displacement loading?

Thank you,
Greg

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

eBook - Simulation-Driven Design With SOLIDWORKS
Simulation-driven design can reduce the time and cost of product development. In this engineering.com eBook, we’ll explore how SOLIDWORKS users can access simulation-driven design through the SOLIDWORKS Simulation suite of analysis tools. Download Now
eBook - Integrating the Engineering Ecosystem
Aras Innovator provides multiple options for integrating data between systems, depending on the scenario. Utilizing the right approach to meet specific business requirements is vital. These needs range from authoring tools, federating data from various and dissimilar databases, and triggering processes and workflows. Download Now
Research Report - Simulation-Driven Design for SOLIDWORKS Users
In this engineering.com research report, we discuss the rising role of simulation and the paradigm shift commonly called the democratization of simulation. In particular, we focus on how SOLIDWORKS users can take advantage of simulation-driven design through two analysis tools: SOLIDWORKS Simulation and 3DEXPERIENCE WORKS. 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