A practical multiscale approach for optimization of structural damping

Erik Andreassen, Jakob Søndergaard Jensen

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Abstract

A simple and practical multiscale approach suitable for topology optimization of structural damping in a component ready for additive manufacturing is presented.The approach consists of two steps: First, the homogenized loss factor of a two-phase material is maximized. This is done in order to obtain a range of isotropic microstructures that have a connected stiff material phase. Second,the structural damping of the component is maximized using material interpolations based on the homogenized properties of the microstructures. In order to achieve convergence towards a discrete set of material phases in the macroscopic problem, a material interpolation that favors values close to the predefined material densities is introduced.
Original languageEnglish
JournalStructural and Multidisciplinary Optimization
Volume53
Issue number2
Pages (from-to)215-224
ISSN1615-147X
DOIs
Publication statusPublished - 2016

Keywords

  • Damping
  • Microstructure
  • Topology optimization
  • Homogenization
  • Multiscale
  • Additive manufacturing

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