Abstract
Using the example of a shaped beam, a few interesting effects of changes in section form are shown. It is proved that, with simultaneous fulfillment of strength and rigidity conditions, the mass of any uniform-strength beam whose section sizes change according to the power law is three times less than the mass of a beam with a constant section. Methods of increasing weight fineness and the durability of composite elastic elements are analyzed, and the influence of shape “non-fineness” on characteristics of rigidity, mass, and strength of a beam is estimated.
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