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

RBE interface force

RBE interface force

RBE interface force

How to evaluate the forces at RBE2 and RBE3 interfaces?
Is it possible to do it without a spring or beam element in between?

What I have is




RE: RBE interface force

Output grid point forces.

RE: RBE interface force

SWComposites, how do you use to do that?

I'm using femap and the nodal output options I have are
Applied load
Constraint force
Equation force
Force Balance

Which one correspond to your suggestion?

RE: RBE interface force

Dear FSB1,
The best way to get interface loads beteween any type of elements is to use the FREEBODY Diagrams in FEMAP, making sure to activate the FORCE BALANCE in the NASTRAN Ouput Request:

The following image is an example of the FREEBODY diagram feature of FEMAP extracting loads between RBE2 and 2-D Shell CQUAD4 elements:

The same example problem using RBE3 elements:

In the FREEBODY Diagram creation in FEMAP make sure to use the option INTERFACE LOAD:

To learn more about RBE2/RBE3 elements with FEMAP please visit my blog in the following address:

Best regards,

Blas Molero Hidalgo
Ingeniero Industrial

WEB: http://www.iberisa.com
Blog de FEMAP & NX Nastran: http://iberisa.wordpress.com/

RE: RBE interface force


Thank you Mr. Blas

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