Optimal topology design of steel-concrete composite structures under stiffness and strength constraints
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AbstractThis study presents a three-phase topology optimization model and an effective solution procedure to generate optimal material distributions for complex steel-concrete composite structures. The objective is to minimize the total material cost (or mass) while satisfying the specified structural stiffness requirements and concrete strength constraints. Based on the Drucker-Prager criterion for concrete yield behaviour, the extended power-law interpolation for material properties and a cosine-type relaxation scheme for Drucker-Prager stress constraints are adopted. An enhanced aggregation method is employed to efficiently treat the large number of stress constraints, and the optimal topology is obtained through a standard gradient-based search. Several examples are provided to demonstrate the capability of the proposed optimization method in automatically finding the reasonable composite layout of steel and concrete. (C) 2012 Elsevier Ltd. All rights reserved.
All Author(s) ListLuo YJ, Wang MY, Zhou MD, Deng ZC
Journal nameComputers and Structures
Volume Number112
Pages433 - 444
LanguagesEnglish-United Kingdom
KeywordsDrucker-Prager criterion; Enhanced aggregation method; Steel-concrete composite structures; Topology optimization
Web of Science Subject CategoriesComputer Science; Computer Science, Interdisciplinary Applications; COMPUTER SCIENCE, INTERDISCIPLINARY APPLICATIONS; Engineering; Engineering, Civil; ENGINEERING, CIVIL

Last updated on 2021-06-12 at 00:06