Martin, Louis Adolphe, 1880- · New York, J.Wiley & Sons, Inc.: [etc. etc.] · leaf 129
a beam section, so that the formula M PL y applies and the stress calculated by its means must be p added to the direct stress pc — —• For the present calculation I may be convenientlyexpressed in terms of the radius of gyration, k, of the section by means of the de-fining equation I = Ak2.… … P = My _ (Pe)yI Ak2where y is the distance fromNA, the neutral axis, tothat element of the sectionon which the stress is p.When y is measured to theright of NA, in Fig. 53, p isevidently a compressive stress, and when toward the lefta tensile stress. Moreover, the variations of this stressfollow…
Mechanics
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