Structural and Stress Analysis 4th Edition
Book Preface
The publication of a fourth edition has enabled me to include additional worked examples and end-of-chapter problems of a more practical nature in response to the general tone of the latest market research. Further, it has allowed me to correct some typographical errors that inevitably, it seems, creep into the text. Also I have included a chapter on the design of riveted, bolted, and welded connections, which, of course, is of an essentially practical nature.
In some chapters I have expanded the text, for example, in Chapter 2 I have included more worked examples on statics and introduced the extremely useful Bow’s notation. In Chapter 9 I have extended the work on combined bending and direct stress to the analysis of gravity structures such as earth-retaining walls, dams, and chimneys.
Accompanying the text is a Solutions Manual, which gives complete solutions to all the end-of-chapter problems.
T.H.G. Megson
In the past it was common practice to teach structural analysis and stress analysis, or theory of structures and strength of materials as they were frequently known, as two separate subjects where, generally, structural analysis was concerned with the calculation of internal force systems and stress analysis involved the determination of the corresponding internal stresses and associated strains. Inevitably a degree of overlap occurred. For example, the calculation of shear force and bending moment distributions in beams would be presented in both structural and stress analysis courses, as would the determination of displacements. In fact, a knowledge of methods of determining displacements is essential in the analysis of some statically indeterminate structures. It seems logical, therefore, to unify the two subjects so that the ‘story’ can be told progressively with one topic following naturally on from another.
In this chapter we shall look at the function of a structure and then the different kinds of loads the structures carry. We shall examine some structural systems and ways in which they are supported. We shall also discuss the difference between statically determinate and indeterminate structures and the role of analysis in the design process. Finally, we shall look at ways in which structures and loads can be idealized to make structures easier to analyse.
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