Compressive Buckling of Simply Supported Plates With Longitudinal Stiffeners Page: 4 of 24
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NACA TN No. 1825
C integer defining location of stiffener
Q integer defining number of buckles in y-direction
1 =q (N-1))
m integer defining number of buckles in x-direction
RESULTS AND DISCUSSION
Charts are presented for the analysis of the stability under uniform
compression of simply supported rectangular plates with one, two, three,
and an infinite number of identical equally spaced longitudinal stiffeners
having no torsional stiffness (fig. 1). These charts (figs. 2 to 5) show
the relationship between the buckling stress coefficient and the
plate bay aspect ratio for several values of , the ratio of the
stiffener flexural stiffness of a plate bay, and A, the ratio of the
stiffener area to the area of a plate bay. The equations from which
these charts were computed are derived and discussed in the appendix.
The range of plate bay aspect ratios covered in the figures has
been limited to values less than 8. The computations indicate that, for
an aspect ratio greater than 8, the buckling stress coefficient is given
very accurately by the smaller of the two values obtained from the
Saad2 m m EI
T2D 1 +-_A
cr = 4 (2)
Consecutive integral values of m are substituted in equation (1) until
a minimman value of the buckling coefficient is obtained for given values
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Seide, Paul & Stein, Manuel. Compressive Buckling of Simply Supported Plates With Longitudinal Stiffeners, report, March 1949; (digital.library.unt.edu/ark:/67531/metadc55144/m1/4/: accessed November 19, 2018), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.