期刊
COMPUTERS & STRUCTURES
卷 170, 期 -, 页码 26-36出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.compstruc.2016.03.012
关键词
Topology optimization; Strut-and-tie models; Reinforced concrete structures; Plain concrete structures; Energy-based methods
A numerical method based on topology optimization is proposed to generate optimal strut-only models for structures made of plain concrete and optimal strut-and-tie models for concrete structures where fixed regions of reinforcement are prescribed. Assuming concrete as a hyper-elastic material carrying only compression, both the inherently nonlinear equilibrium equation and the energy-based topology optimization problem are solved within the same minimization procedure. Numerical simulations investigate load paths within the two-dimensional domain in case of conventional rebar cages. A stress diffusion problem is considered as well. (C) 2016 Elsevier Ltd. All rights reserved.
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