Journal
COMPUTER METHODS IN APPLIED MECHANICS AND ENGINEERING
Volume 186, Issue 2-4, Pages 339-356Publisher
ELSEVIER SCIENCE SA
DOI: 10.1016/S0045-7825(99)00390-4
Keywords
structural optimization; topology; genetic algorithm
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The genetic algorithm (GA), an optimization technique based on the theory of natural selection, is applied to structural topology design problems. After reviewing the GA and previous research in structural topology optimization, we describe a binary material/void design representation that is encoded in GA chromosome data structures. This representation is intended to approximate a material continuum as opposed to discrete truss structures. Four examples, showing the broad utility of the approach and representation, are then presented. A fifth example suggests an alternate representation that allows continuously-variable material density. Concluding discussion suggests recommended uses of the technique and describes ongoing and possible future work. (C) 2000 Elsevier Science S.A. All rights reserved.
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