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A regional genetic algorithm for the discrete optimal design of truss structures

✍ Scribed by A. A. Groenwold; N. Stander; J. A. Snyman

Publisher
John Wiley and Sons
Year
1999
Tongue
English
Weight
144 KB
Volume
44
Category
Article
ISSN
0029-5981

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✦ Synopsis

A regional genetic algorithm (R-GA) is used for the discrete optimal design of truss structures. The chromosomes are selected from a sub-region centred on the continuous optimum. This approach replaces genetic rebirth as previously proposed by other authors, thereby signiÿcantly reducing computational costs. As a pure discrete method, the R-GA method does not require heuristic arguments or approximations. This makes the algorithm highly e ective when buckling and slenderness constraints with scatter in the data are introduced. A large set of numerical test examples is used to illustrate the capabilities of the method. The algorithm is shown to be e ective and robust, making it suitable for the optimal design of very large truss structures.

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