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Systematic design of particle dampers for transient vertical vibrations
Citation Link: https://doi.org/10.15480/882.4764
Publikationstyp
Journal Article
Date Issued
2023-02
Sprache
English
Author(s)
Meyer, Niklas
Institut
TORE-DOI
Journal
Volume
25
Issue
1
Article Number
3
Citation
Granular Matter 25 (1): 3 (2023-02)
Publisher DOI
Scopus ID
Publisher
Springer
A multilevel design toolchain is used for the development of particle dampers for vertical transient vibrating structures. Thereby various experimental tests and numerical models are combined. The design toolchain consists of three levels. The frst level deals with the micro-mechanical behavior of single particle–particle and particle–wall impacts. The resulting coeffcient of restitution is then used on the second level. Within, the second level the properties of vertical vibrated granular matters inside a container under harmonic motion are analyzed. The resulting motion modes and energy dissipation of the granular matter strongly depend on the excitation conditions, i. e. the excitation amplitude and excitation frequency. Multiple analytical formulations for the diferent motion modes, i. e. solid-like state and collect-and-collide motion mode, are derived to describe the energy dissipation within the particle damper. These analytical descriptions are in good agreement with numerical discrete element simulations. Finally, the third level of the design toolchain deals with designing a damper for a desired structure. The analytical formulations describing the energy dissipation within the particle damper are used to optimize a particle damper confguration for a simple beam-like structure undergoing a vertical transient vibration. The efciency of the optimized particle damper dissipation is proven experimentally.
Subjects
Particle damper
Design toolchain
Vertical vibrations
Granular material
DEM
Complex power
DDC Class
530: Physik
600: Technik
620: Ingenieurwissenschaften
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