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Structural Optimization by the Homogenization Method

  • Grégoire Allaire
  • François Jouve
Conference paper
Part of the Solid Mechanics and Its Applications book series (SMIA, volume 66)

Abstract

We discuss a method of structural optimization in the context of linear elasticity. We seek the optimal shape of an elastic body which is both of minimum weight and maximal stiffness under specified loadings. Mathematically, a weighted sum of the elastic compliance and of the weight is minimized among all possible shapes. This problem is known to be “ill-posed”, namely there is generically no optimal shape and the solutions computed by classical numerical algorithms are highly sensitive to the initial guess and mesh-dependent. Our method is based on the homogenization theory which makes this problem well-posed by allowing microperforated composites as admissible designs. A new numerical algorithm is thus obtained which allows to capture an optimal shape on a fixed mesh. Such a procedure is called topology optimization since it places no explicit or implicit restriction on the topology of the optimal shape, i.e. on its number of holes or members.

Keywords

Homogenization Method Fixed Mesh Elastic Compliance Homogenization Theory Structural Optimization Problem 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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Copyright information

© Springer Science+Business Media Dordrecht 1999

Authors and Affiliations

  • Grégoire Allaire
    • 1
  • François Jouve
    • 2
  1. 1.Commissariat à l’Energie AtomiqueDRN/DMT/SERMA, CEA SaclayGif sur YvetteFrance
  2. 2.Ecole PolytechniqueCentre de Mathématiques AppliquéesPalaiseauFrance

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