General Instability of Stiffened Cylinders Page: 4 of 27
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NACA TN 4237 3
If bending moment of inertia of frame including effective sheet, in.
Is bending moment of inertia of stiffener including effective sheet,
in.4
J = 3f + Js
Jf distributed torsional moment of inertia of frame, f/d, cu in.
Js distributed torsional moment of inertia of stiffener, is/b.
cu in.
Jf torsional moment of inertia of stiffener, in.4
J, torsional moment of inertia of frame, in.4
ky buckling coefficient for unstiffened circular cylinder under
lateral pressure
kp buckling coefficient for unstiffened circular cylinder under
hydrostatic pressure
L length of cylinder, in.
Mx = EIs -2
= -
M XY=1 G J 2
xy 2 8x (y
My = EIfy -y
m,n parameters of axial and circumferential buckle wave lengths
M = ada
Nx axial normal load on cylinder, ots, Ib/in.
N shear load on cylinder, it, lb/in.
N circumferential normal load on cylinder, ytf, Ib/in.
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Becker, Herbert. General Instability of Stiffened Cylinders, report, July 1958; (https://digital.library.unt.edu/ark:/67531/metadc57302/m1/4/: accessed April 19, 2024), University of North Texas Libraries, UNT Digital Library, https://digital.library.unt.edu; crediting UNT Libraries Government Documents Department.