×
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

Setting problems and Results in FEMAP

Setting problems and Results in FEMAP

Setting problems and Results in FEMAP

(OP)
Hello community,

https://www.dropbox.com/sh/k2k1k1a0ijiuwaw/AAAH7fs...

I linked here a dropbox file where you can find the geometry and the model setting.

I want to give a clear vision of the problem.I have 2 surfaces that are linked togheter with titanium bridges. The aim is to impose an expansion, due a thermal load, to the external/big surface and to transfer the displacement of the holes of the Big surface to the holes of the little/internal one,

To do this, I've used the following elements:

1) RBE3 elements for the holes;

2) Circular tube Beam elements as the connection elements between the 2 surfaces.

So, I linked togheter the holes of the 2 surfaces.

The loads that I applied are 3 thermal load, on both the surfaces and on the beam elements, by the way, because i don't want any kind of thermal expansion on beam elemetns and on the internal surcafe, i put a coefficient of thermal expansion = 0 for both the materials, in this manner, I can set a thermal load without any kind of expansion.

The constraints that i applied allow the big surface to expand, I need to have the surface at the centre free to move in the space.

I set an non linear advanced static analysis but i can't understand how to modify the loads/constraints/elements that allow me to have the desired deformed body.

More important, i can't understand why the internal surface do this strange movements in the space.

I really need the help of an expert because this is my MSc work started during my Erasmus, but never completed because at the end of the project, the erasmus coordinator can't help me to solve the problem (because he never faced this kind of problem) and my local coordinator uses Ansys and so he can't give me a concrete help to properly set the software.

If you can, modify my model on dropbox.

Thanks in Advance

PieFierro

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