Modeling of arrays of passive granular dampers

Clara Saluena; Sergei E. Esipov; Dirk Rosenkranz; Hagop V. Panossian

doi:10.1117/12.349800

2 June 1999 Modeling of arrays of passive granular dampers

Clara Saluena, Sergei E. Esipov, Dirk Rosenkranz, Hagop V. Panossian

Proceedings Volume 3672, Smart Structures and Materials 1999: Passive Damping and Isolation; (1999) https://doi.org/10.1117/12.349800
Event: 1999 Symposium on Smart Structures and Materials, 1999, Newport Beach, CA, United States

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.

Citation Download Citation

Clara Saluena, Sergei E. Esipov, Dirk Rosenkranz, and Hagop V. Panossian "Modeling of arrays of passive granular dampers", Proc. SPIE 3672, Smart Structures and Materials 1999: Passive Damping and Isolation, (2 June 1999); https://doi.org/10.1117/12.349800

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