Citation Request for "St. Mech. Note 15. Short wave Buckling of Stiffened Sheet"

[FJCV]

Dear Engineers,

The Grumman Structures Manual (page B6.11.2-7) shows attached figure 4, with the title "Short wave Buckling of Stiffened Sheet" and refers to "St. Mech. Note 15.". Does anybody know the full citation for this reference? I like to buy a copy. Thx.

Grumman Structures Manual:

https://archive.org/details/GrummanStructuresManual

Figure 4:

http://files.engineering.com/getfil...c=212727627.8.1498174526730&__hsfp=2966074484

 

[inertia4u]

Hi FJCV -
I spent last weekend looking for alternate references - namely because I know I've seen that "Figure 4" plot before from another reference. NO luck. That being said, my guess is that "St. Mech. Note 15" is may be an internal Grumman technical note. Out of curiosity, have you tried searching the NACA technical report server and look at the "Handbook on structural stability" series of reports?

Cheers and good luck,

PK

-----
Nert

 

[SWComposites]

That figure looks like its from an old (1960's) NASA stiffened panel document. Looks familiar also.

 

[WKTaylor]

Try Goggling 'NACA technical note handbook of structural stability'... might be in one of those documents...

Regards, Wil Taylor

o Trust - But Verify!
o We believe to be true what we prefer to be true. [Unknown]
o For those who believe, no proof is required; for those who cannot believe, no proof is possible. [variation,Stuart Chase]
o Unfortunately, in science what You 'believe' is irrelevant. ["Orion", Homebuiltairplanes.com forum]

 

[FJCV]

Hello All,
Yes I have looked through the NACA Structural Stability Handbook by Gerard (NACA-TN-3781 series)but none contain this figure.

The closest I found was the wrinkling equation in NACA-TN-3431 (eq. 7) which is based on Timoshenko's "Theory of Elasticity" column on an elastic foundation. The values match on for the steep initial curve up but don't cover the transition from short wave buckling to the traditional plate buckling coefficient as shown in figure 4.

However, I was able to recreate figure 4 using FEM eigenmode solutions using plates supported with translation springs. I am working on an analytical solution. Please post any related known solutions for a plate with the long edges on elastic foundations. Thx.