Examples in Structural Analysis


Examples in Structural Analysis

The design of structures, of which analysis is an integral part, is frequently undertaken
using computer software. This can only be done safely and effectively if those
undertaking the design fully understand the concepts, principles and assumptions on
which the computer software is based. It is vitally important therefore that design
engineers develop this knowledge and understanding by studying and using handmethods
of analysis based on the same concepts and principles, e.g. equilibrium, energy
theorems, elastic, elasto-plastic and plastic behaviour and mathematical modelling.
In addition to providing a mechanism for developing knowledge and understanding,
hand-methods also provide a useful tool for readily obtaining approximate solutions
during preliminary design and an independent check on the answers obtained from
computer analyses.

The methods explained and illustrated in this text, whilst not exhaustive, include those
most widely used in typical design offices, e.g. method-of-sections/joint resolution/unit
load/McCaulay’s method/moment distribution/plastic analysis.
In Chapter 7 a résumé is given of the direct stiffness method; the technique used in
developing most computer software analysis packages. The examples and problems in
this case have been restricted and used to illustrate the processes undertaken when using
matrix analysis; this is not regarded as a hand-method of analysis.

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