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Civil-Comp Proceedings
ISSN 1759-3433
CCP: 33
DEVELOPMENTS IN COMPUTATIONAL TECHNIQUES FOR STRUCTURAL ENGINEERING
Edited by: B.H.V. Topping
Paper XII.1

Fast Topological Design in Bidimensional Elasticity

J.E. Souza de Cursi

Rouen Institute of Mechanics, Rouen, France

Full Bibliographic Reference for this paper
J.E. Souza de Cursi, "Fast Topological Design in Bidimensional Elasticity", in B.H.V. Topping, (Editor), "Developments in Computational Techniques for Structural Engineering", Civil-Comp Press, Edinburgh, UK, pp 313-322, 1995. doi:10.4203/ccp.33.12.1
Abstract
We consider a problem of topological optimization: the determination of the minimum mass linear elastic body submitted to a planar field of stresses. We take into account a Von Mises criterion for the plastic collapse (the results can be extended to quadratic functions of the stresses). The topology is characterized by an unknown thickness map rho: the holes correspond to the regions where rho = 0. A 2D mechanical formulation is derived from the 3D formulation. We state a theorem of fully stressed design, which characterizes rho as the solution of an algebraic equation. This result leads to a numerical method which is applied to some classical situations.

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