The Analysis of Structures: Based on the Minimal Principles and the Principle of Virtual Displacements (Classic Reprint) - Tapa blanda

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Excerpt from The Analysis of Structures: Based on the Minimal Principles and the Principle of Virtual Displacements

Many students of engineering consider the analysis of structures a rather boring subject. They do not understand the justification of the assumptions made, and they get tired of memorizing scores of un related formulas, rules, and procedures. It is the hope of the author that in this volume he has proved that these objections to the theory of structures are not justified because the study of structures can be an exciting undertaking. The various methods used by structural engineers are all logically interconnected if one looks upon them, from a unifying standpoint. Not a Single formula need be memorized if the fundamental principles are understood; every method presented in this book is an almost obvious consequence of the basic principles and can be derived with a minimum amount of mathematical manip ulation. The various devices suggested for increasing the accuracy of the calculations and reducing the work involved may appear as tricks to the uninitiated. But to the reader of this book, these devices should become obvious applications of the basic principles.

The first purpose of this volume is therefore the presentation of structural analysis as a logical and unified theory based on a small number of first assumptions. To achieve it, the principle of virtual displacements is chosen as the starting point. The second purpose is the development of the minimal principles of structural theory; they have been used so generally in the engineering literature of the last few years that no modern practicing engineer can afford to ignore them. Finally an effort is made to give the reader a thorough under standing of buckling phenomena.

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