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A simple and effective inverse projection scheme for void distribution control in topology optimization

Almeida, Sylvia Regina Mesquita De; Paulino, Gláucio Hermógenes; Silva, Emilio Carlos Nelli Universidade De São Paulo

Structural and Multidisciplinary Optimization, v.39, n.4, p.359-371, 2009

SPRINGER 2009

Acesso online

  • Título:
    A simple and effective inverse projection scheme for void distribution control in topology optimization
  • Autor: Almeida, Sylvia Regina Mesquita De; Paulino, Gláucio Hermógenes; Silva, Emilio Carlos Nelli
  • Universidade De São Paulo
  • Assuntos: Topology Optimization; Projection Functions; Direct Projection; Inverse Projection; Combined Projection; Two-Phase Optimization; Structural Mechanics; Design; Actuators; Filters; Computer Science; Interdisciplinary Applications; Engineering; Multidisciplinary; Mechanics
  • É parte de: Structural and Multidisciplinary Optimization, v.39, n.4, p.359-371, 2009
  • Descrição: The ability to control both the minimum size of holes and the minimum size of structural members are essential requirements in the topology optimization design process for manufacturing. This paper addresses both requirements by means of a unified approach involving mesh-independent projection techniques. An inverse projection is developed to control the minimum hole size while a standard direct projection scheme is used to control the minimum length of structural members. In addition, a heuristic scheme combining both contrasting requirements simultaneously is discussed. Two topology optimization implementations are contributed: one in which the projection (either inverse or direct) is used at each iteration; and the other in which a two-phase scheme is explored. In the first phase, the compliance minimization is carried out without any projection until convergence. In the second phase, the chosen projection scheme is applied iteratively until a solution is obtained while satisfying either the minimum member size or minimum hole size. Examples demonstrate the various features of the projection-based techniques presented.
    CAPES[3516/06-7]
    FAPESP[2008/5070-0]
    FAPESP[06/57805-7]
    CNPq
    USA NSF[CMS 0303492]
  • DOI: 10.1007/s00158-008-0332-6
  • Títulos relacionados: Structural and Multidisciplinary Optimization
  • Editor: SPRINGER
  • Data de publicação: 2009
  • Idioma: Inglês

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