The Strength of Materials

The Strength of Materials

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This historic book may have numerous typos and missing text. Purchasers can usually download a free scanned copy of the original book (without typos) from the publisher. Not indexed. Not illustrated. 1906 edition. Excerpt: some detail later. Another example of uniformly-varying stress is found in a masonry pier or arch where the line of resultant thrust does not pass through the centre of gravity of the joint or section over which thrust is distributed. It is obvious from consideration of the stress figure that in a uniformly-varying stress the resultant falls to one side of the centre of gravity of the stressed surface: in other words, the resultant is non-axial. And subject to qualifications similar to those which have been explained in dealing with uniformly distributed stress, the converse is approximately true for stresses lying within the elastic limit. That is to say, a non-axially applied load may be taken as giving rise to a stress which approximates more and more nearly to a uniformly-varying distribution the further the section dealt with is from any place where the distribution is disturbed by shoulders or holes or any such alterations in the form of the section. Thus, for example, a long tie-rod of uniform section, the fastenings of which lie excentrically so that the pull is non-axial, will have a stress which to all intents and purposes is uniformly-varying except near the fastenings. The stress in a loaded hook is another example: there the resultant passes so far from the centre of the section that while the inner edge is in tension, the outer edge is in compression. 80. Uniformly-varying Stress forming a Couple. When the neutral axis MN (fig. 48) of a uniformly-varying stress lies, as in that figure, outside of the stressed surface, all parts of the surface are exposed to stress of one sign. The neutral axis may however lie within the surface, and it then divides the surface into two parts, on one of which there is pull and on the other...
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Product details

  • Paperback
  • 189 x 246 x 4mm | 136g
  • United States
  • English
  • black & white illustrations
  • 1236885732
  • 9781236885739