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Plasticity correction

Plasticity correction

Plasticity correction

(OP)
What is the best method to determine plasticity correction for the critical buckling stress of a free flange?

RE: Plasticity correction

Slightly snarky answer: the one that your licensing authority will accept.

Plastic softening of structures is one of those subjects on which one can spend a year on an experiment, which will be valid for that config. BTDT, got great answers. But did it really mean we could confidently design for compression? No.

Cheers

Greg Locock


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RE: Plasticity correction

free flanges would be limited by fcc (that'd be crippling stress, not the federal communiations commission).  typically fcc is limited to fcy.  to go beyond that, a series of tests (and the anticipation of failure !?)

RE: Plasticity correction

I'm sorry, but I disagree with rb1957. You can not cripple sections which are flat.  You need corner in order to get a "crippling stress."

Wingsmith, I recommend you take a look at the Handbook for Stability (do a search in the NACA Technical Report Server for that title).  I've done some research on the topic and have found useful information in the NACA report.

-----
Nert
 

RE: Plasticity correction

Nert,

But the question was with regard to a free flange, not a flat plate.  A flange would have a corner.

Brian
www.espcomposites.com

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