Istituto di Scienza e Tecnologie dell'Informazione     
Cella A., Soosaar K. A discrete variable approach to structural optimization. Internal note IEI-B71-12, 1971.
Optimal structural design is analyzed in a space of discrete variables, i.e. when a finite selection of member properties or element thicknesses is available. The results obtained with different integer programming algorithms are reviewed. A special purpose branch-and-bound algorithm is described in more details, and the results obtained in actual design problems are presented. A few techniques for suboptimization are discussed and applied.

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