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Stresses in BeamsStresses in BeamsBasicsIt is convenient to imagine a beam to be composed of an infinite number of thin longitudinal fibers. Each longitudinal fiber is assumed to act independently of every other fiber. The beam of Fig. 7-1, for example, will deflect downward and the fibers in the lower part of the beam undergo extension, while those in the upper part are shortened. These changes in the lengths of the fibers set up stresses in the fibers. Those that are extended have tensile stresses acting on the fib…
William Nash; Merle Potter: Schaum’s Outline of Strength of Materials, Fifth Edition. Stresses in Beams, Chapter
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