Elastic Instability of Members Having Sections Common in Aircraft Construction (1932)
NASA Technical Reports Server (NTRS) · leaf 22
limit will be called E in this report and that means of the preceding formulas if the modulus for above will be called E\ Although both depend upon inelastic deformation is known. Although this modu- the slope of the line connecting the origin with the lus is a variable beyond the elastic limit, it… … h X sfro/'n, inches Figure 15.—Stress-strain curves for spruce beams. Values taken from these curves are for use in the equation: Modulus of elasticity=130.7 ^ train shows such a diagram for a spruce beam in bending. The formula proposed by Karman and advocated From it the required modulus, for a…
NASA Technical Reports Server (NTRS)
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