×
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

Cozzone Curves
6

Cozzone Curves

RE: Cozzone Curves

(OP)
before i use that equation for determining fo, i'd really like to know a little bit more about it and who developed it - especially since i need to reference it in a report if i use it. MAC339 is one document that i've never been able to get ahold of. If the equation was indeed developed by Douglas and is only in MAC339 - does anyone know where i can obtain a copy of it?  

RE: Cozzone Curves

6
MSN
As I know it, the derivation was developed by Eberwien et al and published in Germany at an Aluminium Association conference. I have replicated the derivation of the MAC339 formula for determining fo at any stress fm. The formula is also in a later revision of Bill McCombs' Bruhn Supplement.

You could also try the Cornell University website at Civil Engineering, work done by researcher Mr Kim, also for the Aluminium Association, who gives an indication how to perform the derivation.

Ed

RE: Cozzone Curves

(OP)
I cannot find the formula in my copy of McCombs. But, I appreciate the derivation - thanks Ed

MSN

RE: Cozzone Curves

MSN and All
Thank you for the Star Kudos, much appreciated.
For completeness of my references, I tracked down Dr Ulrike Eberwien and obtained the original paper directly from her. The derivation in her paper is slightly different from mine but, with manipulation, it can ultimately provide the fo/fm formula as used in the MAC339 spreadsheet. Her paper is attached. It is more clearly laid out in the additional 2 attached Cornell University papers by Kim and Peköz. The key to the derivation is switching the y variable in terms of the strain, rather than the other way round.
Ed.
 

RE: Cozzone Curves

(OP)
Ed, thanks for being so thorough- much appreciated. Nevertheless, I'm having trouble opening the third reference on plastic bending. Can you upload it again?

msn

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