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


Hoop stresses

Hoop stresses

Hoop stresses

Hoop stresses on fuselage
Hoop stresses on fuselage are mainly taken from the skin, there’s also a significant load taken by the frames. I have seen in many analysis that they ignore the contribution from the frame. Assuming that all hoop load is taken by skins that is a very conservative approach. Sometimes this could yield to heavier skins..
Any thoughts?

RE: Hoop stresses

this is in my experience a very common approach. for my money it is accurate for the mid-frame bay skin, and conservative for the skin at the frame.

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

RE: Hoop stresses

If you are interested, try searching for:

Miller, M., Gruber, M. L., Wilkins, K. E., & Worden, R. E., N95-14485, Titled, “Full-Scale Testing and Analysis of Fuselage Structure,” The Boeing Company, Seattle, WA

There is some discussion about the stress profile and a reduction factor near the reinforcing substructure. In my experience this is only considered in certain cases when trying to develop a crack growth stress for specific DTA scenarios. Of course, it is usually conservative to ignore the substructure.

Keep em' Flying
//Fight Corrosion!

RE: Hoop stresses

yes, very conservative to consider only the skin. A pretty easy way to account for frames is to use Flugge, NACA TN 2612.

RE: Hoop stresses

calc i've seen using flugge stress aren't That different to hoop stress.

FEM I've made show that mid bay the skin is reacting hoop stress. local to frames stress is smaller.

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!


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