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A practical multiscale approach for optimization of structural damping

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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.

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Authors and Affiliations

  1. Department of Mechanical Engineering, Technical University of Denmark, Nils Koppels Allé, Building 404, 2800 Kgs., Lyngby, Denmark

    Erik Andreassen

  2. Department of Electrical Engineering, Technical University of Denmark, Ørsteds Plads, Building 352, 2800 Kgs., Lyngby, Denmark

    Jakob Søndergaard Jensen

Authors
  1. Erik Andreassen
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  2. Jakob Søndergaard Jensen
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Correspondence to Erik Andreassen.

Additional information

This work was funded by the Danish Research Agency through the innovation consortium F⋅MAT.

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Andreassen, E., Jensen, J.S. A practical multiscale approach for optimization of structural damping. Struct Multidisc Optim 53, 215–224 (2016). https://doi.org/10.1007/s00158-015-1326-9

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  • DOI: https://doi.org/10.1007/s00158-015-1326-9

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