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Civil-Comp Proceedings
ISSN 1759-3433
CCP: 13
ARTIFICIAL INTELLIGENCE AND STRUCTURAL ENGINEERING
Edited by: B.H.V. Topping
Paper IX.1

Heuristics Driven Strategies for Near-Optimal Structural Topology Development

N. Shankar* and P. Hajela+

*University of Florida, Gainesville, Florida
+Rensselaer Polytechnic Institute, Troy, New York, USA

Full Bibliographic Reference for this paper
N. Shankar, P. Hajela, "Heuristics Driven Strategies for Near-Optimal Structural Topology Development", in B.H.V. Topping, (Editor), "Artificial Intelligence and Structural Engineering", Civil-Comp Press, Edinburgh, UK, pp 219-226, 1991. doi:10.4203/ccp.13.9.1
Abstract
The paper describes a quasi-procedural approach for the generation of near-optimal structural topologies. Such an approach is characterized by the use of algorithmic processing to enumerate the design space, and to use this information in a design methodology dominated by heuristic decisions. The paper presents a stagewise decomposition approach, which is thematically similar to dynamic programming, to decompose the given problem into a series of stages (subproblems), and generate a population of trial designs. A genetic algorithm based search is then conducted in a discontinuous space with these designs as seeds, to obtain an optimal design for the problem. The issue of structural stability is addressed by the use of embedded heuristics. A representative structural design problem is used to illustrate the approach.

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