×
INTELLIGENT WORK FORUMS
FOR ENGINEERING PROFESSIONALS

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!
  • Students Click Here

*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

Jobs

Failure of Steel Plate

Failure of Steel Plate

Failure of Steel Plate

(OP)
Hi there,

I am trying to check whether the 1/4" plate shown in the attached drawing will fail when a 6T point load is applied in the middle (in bending) and near the supports (in shear). How would I go about analysing this? I was first thinking to analyse the plate as a simply supported beam but the plate is restrained on all 4 sides. Any help would be appreciated.

RE: Failure of Steel Plate

If I'm remembering correctly this is covered directly in Roark's.

RE: Failure of Steel Plate

The span in one direction is larger than the other direction, you can treat the plate as beam. The ratio of span to the plate thickness is 78 and therefore you can ignore the membrane force in the plate.

Also, please note point load is just a theoretical concept, the real dimension of the load foot print should be considered in your case.

RE: Failure of Steel Plate

Do you mean 12,000 lbs? Using that, I ran it myself......and I came out with it being greatly overstressed (assuming we are talking about A36 plate here). And that is with the supports being completely fixed as well. (Which isn't going to occur with it sitting on some beams.) Pinned would probably be more accurate.

Running alternate thicknesses (with pinned supports), I came out with 5/8" thick being borderline on stress (about 27 ksi max.) deflection was ok (about 0.12"; at 5/8" thick). These numbers are with NO impact factor by the way.

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!


Resources