The Influence of the Form of a Wooden Beam on Its Stiffness and Strength I : Deflection of Beams with Special Reference to Shear Deformations (1924)
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DVISORY COMMITTEE FOR AERONAUTICS. The great difference in the shearing modulus of elasticity of ply-wood webs with the grain at 45° to the length of a beam and with the grain of face plies perpendicular to the length of the beam is well illustrated in Figure 7. The section of the beam is that of… … Spon in feet PI* Fig. 7.—Relation of span to value obtained by substituting deflections in Tgjj' foot , and the points indicate the results of these tests. The full lines were obtained by sub- stituting in the formula A_ PP KPl 4SEr F ' For the beam having ply-wood webs with the grain at 45° to the…
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