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Proceedings Paper

Modeling of arrays of passive granular dampers
Author(s): Clara Saluena; Sergei E. Esipov; Dirk Rosenkranz; Hagop V. Panossian
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Paper Abstract

Simulation models in space industry may allocate a few mesh points for such fine details as granular dampers embedded in mechanical parts. As a result, collective dynamics of grains inside dampers cannot be adequately resolved. A hierarchical approach to modeling and design has been explored by practitioners to study this phenomenon. Available models fail to explain the observed spectral response. This article is an attempt to examine models where dampers are replaced by calibrated linear and non-linear visco-elastic units with stochastic forcing. Namely, the parameterization of a non- linear visco-elastic unit is described. Non-linearity facilitates mode-mixing and shifts of major resonances, while stochastic forcing contributes to the overall risk assessment. Limitations of the proposed reductions of granular hydrodynamics are discussed.

Paper Details

Date Published: 2 June 1999
PDF: 11 pages
Proc. SPIE 3672, Smart Structures and Materials 1999: Passive Damping and Isolation, (2 June 1999); doi: 10.1117/12.349800
Show Author Affiliations
Clara Saluena, Humboldt-Univ. zu Berlin and Univ. de Barcelona (Spain)
Sergei E. Esipov, Ctr. Risk Advisors (United States)
Dirk Rosenkranz, Humboldt-Univ. zu Berlin (Germany)
Hagop V. Panossian, Boeing Corp. (United States)


Published in SPIE Proceedings Vol. 3672:
Smart Structures and Materials 1999: Passive Damping and Isolation
T. Tupper Hyde, Editor(s)

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