×
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

Relative Displacements

Relative Displacements

Relative Displacements

(OP)
I'm trying to find the displacements of the centre of an access cover relative to the fixings around it's edge. The access cover is modelled on a FEM of the full wingbox but my problem is the deflection caused by global wing bending 'swamp' the local deflections on the access panel. How can I remove these global wing bending effects so I can find the local deflections on the access panel caused by the applied air pressures, thermal and wing bending strains?

RE: Relative Displacements

I think you can set up a local coordinate system on the access cover, one that moves with the cover.

another day in paradise, or is paradise one day closer ?

RE: Relative Displacements

Um, just compare the deflection of the center of the panel to the average deflection of all of the nodes around the edge of the panel.

RE: Relative Displacements

Why you want to separate it, it is integral part of the wing, and since you have it FEM-ed you have the picture for stress and strain?

RE: Relative Displacements

i'm guessing he wants to know the deflections around the perimeter of the access panel, maybe to design the seal ?

another day in paradise, or is paradise one day closer ?

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