Excerpt from Text-Book on the Strength of Materials
In presenting this book the authors believe that its title sufficiently indicates its purpose and scope. It may be well, however, to add a few words on certain features to which it is desired to call special attention.
In order to provide for the needs of both class room and laboratory the book has been divided into two parts, the first part presenting the theoretical side of the subject and the second part its experimental side. By this means it is believed that a closer correlation of laboratory and class work may be secured, and also that the student will obtain a more effective knowledge of the subject and the book prove a more valuable addition to his professional library.
The mechanics of materials, as ordinarily presented, differs essentially from the mathematical theory of elasticity, in that the former is concerned with the development of special rules applicable to the structural forms in common use, whereas the latter deals with the general relations between stress and deformation in an elastic solid, irrespective of its size or form. While special rules may be sufficient in most cases, the student should have some knowledge, at least, of the general fundamental principles upon which they are based, in order that he may be in a position to treat new problems as they arise. With this in mind, the first two chapters have been devoted to a general discussion of the relations between stress and deformation, and the demonstration of certain elementary theorems which serve as a basis for the special rules of calculation subsequently developed.
In the analytical treatment of the subject the aim has been to give a systematic development, combining rigor with simplicity. In accordance with this purpose such fundamental ideas as Hooke's law and Bernoulli's assumption have been given in detail, and special emphasis placed on the limitations to their validity.
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This book is a reproduction of an important historical work. Forgotten Books uses state-of-the-art technology to digitally reconstruct the work, preserving the original format whilst repairing imperfections present in the aged copy. In rare cases, an imperfection in the original, such as a blemish or missing page, may be replicated in our edition. We do, however, repair the vast majority of imperfections successfully; any imperfections that remain are intentionally left to preserve the state of such historical works. Это и многое другое вы найдете в книге Text-Book on the Strength of Materials (Classic Reprint) (S. E. Slocum)