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Design-dependent loads in topology optimization

Published online by Cambridge University Press:  15 September 2003

Blaise Bourdin  and
Antonin Chambolle
Blaise Bourdin
Affiliation:
Courant Institute of Mathematical Science, New York University. : Department of Mathematics, Louisiana State University, Baton Rouge LA 70803-4918, USA; bourdin@math.lsu.edu.
Antonin Chambolle
Affiliation:
CEREMADE, UMR 7534 du CNRS, Université de Paris-Dauphine, 75775 Paris Cedex 16, France; chambolle@ceremade.dauphine.fr.
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Abstract

We present, analyze, and implement a new method for the design of the stiffest structure subject to a pressure load or a given field of internal forces. Our structure is represented as a subset S of a reference domain, and the complement of S is made of two other “phases”, the “void” and a fictitious “liquid” that exerts a pressure force on its interface with the solid structure. The problem we consider is to minimize the compliance of the structure S, which is the total work of the pressure and internal forces at the equilibrium displacement. In order to prevent from homogenization we add a penalization on the perimeter of S. We propose an approximation of our problem in the framework of Γ-convergence, based on an approximation of our three phases by a smooth phase-field. We detail the numerical implementation of the approximate energies and show a few experiments.

Keywords

Topology optimizationoptimal designdesign-dependent loadsΓ-convergencediffuse interface method.
Type
Research Article
Information
ESAIM: Control, Optimisation and Calculus of Variations , Volume 9 , January 2003 , pp. 19 - 48
Copyright
© EDP Sciences, SMAI, 2003

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