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

Shell to solid bolted connection

Shell to solid bolted connection

Shell to solid bolted connection

Hi everyone,

I'm currently working on a FEM model (Nastran) that due to geometrical reasons must have both shell and solid elements.
I must create several bolted connections between shell-solid and my intention is purely to transfer loads between them. Stress distribution around the bolted area is not important.

My first approach was to connect a node from the shell and another from the solid element through and RBE2 element, where the dependant and independant grids depend on the load path (in some cases it's from shell-to-solid and in others the otherway around). However, with this approach bending moment is not transferred from shell-to-solid and so I think results may not be accurate.
Is there any other method to effectively transfer load from shell-to-solid and vice-versa?


RE: Shell to solid bolted connection

Hi acga,

nodes of solid elements have "only" 3 d.o.f. rather nodes of shell elements have 5. You should connect the RBE2 with at least 2 solid elements, in order to transfer the bending moments of the plate elements.

RE: Shell to solid bolted connection

The chapter "How Do I Attach Plate and Bar Elements to Solid Elements" of this document (starting at page 69) gives some useful advice.

RE: Shell to solid bolted connection

Thanks for both answers!
I ended up modelling the bolted connections through several RBE2s and from the results it seems to be correctly transfering all the load from one part to the other.

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


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