Multi-material topology optimization of viscoelastically damped structures: 21-26 August, Montreal, Canada

Max van der Kolk, Gijs van der Veen, J de Vreugd, Matthijs Langelaar

Research output: Chapter in Book/Conference proceedings/Edited volumeConference contributionScientificpeer-review

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Abstract

The design of high performance instruments often involves the attenuation of poorly damped resonant modes. Current design methods typically rely on informed trial and error based modifications to improve dynamic performance. In this contribution, we present a multi-material topology optimization as an alternative, systematic methodology to design structures with optimized damping characteristics. A parametric, level set-based topology optimization is employed to simultaneously distribute structural and viscoelastic material to optimize the structure’s damping characteristics. To model the viscoelastic behavior a complex-valued material modulus is applied. The structural loss factor is determined from the complex-valued eigensolutions and its value is maximized during the optimization. We demonstrate the performance of the optimization by maximizing the damping of a cantilever beam.
Original languageEnglish
Title of host publicationProceedings of the 24th International Congress of Theoretical and Applied Mechanics
EditorsJ.M. Floryan, V. Tvergaard, D. van Campen
Pages1-2
Publication statusPublished - 2016
Event24th International Congress of Theoretical and Applied Mechanics (ICTAM) - Montreal, Canada
Duration: 21 Aug 201626 Aug 2016
Conference number: 24

Conference

Conference24th International Congress of Theoretical and Applied Mechanics (ICTAM)
Abbreviated titleICTAM 2016
CountryCanada
CityMontreal
Period21/08/1626/08/16

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