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

Maximum deflection aluminium

Maximum deflection aluminium

Maximum deflection aluminium


I have a quadratic plate where the edges are fixed. I have a distributed load of 25000 N over the entire plate which is made of aluminium. How can I calculate the deflection of the plate?

Thank you

RE: Maximum deflection aluminium

If by 'quadratic', you mean 'rectangular', the necessary equations should be found in many sophomore engineering textbooks, in any number of online calculators dealing with plates, in Roark's Formulas for Stress and Strain, and even in Machinery's Handbook.

If you mean something else, please so state, and elucidate. Thank you.

Mike Halloran
Pembroke Pines, FL, USA

RE: Maximum deflection aluminium

Thank you, I have found equations in Roarks with rectangular plate with uniform distributed load and clamped along all edges. My deflection is larger than half the thickness so thin plate theory (as Roarks) does not apply. I need equations for large deflection theory. Any idea how to solve it?

RE: Maximum deflection aluminium

Are the edges truly fixed, preventing any inward contraction of the plate ?

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