The synergistic effect of the multiple parameters of vibro-impact nonlinear energy sink

Petro Lizunov; Olga Pogorelova; Tetiana Postnikova

doi:10.59400/jam.v1i3.199

The synergistic effect of the multiple parameters of vibro-impact nonlinear energy sink

Petro Lizunov Scientific Research Institute of Structural Mechanics,Kyiv National University of Construction and Architecture, 03680 Kyiv,Ukraine
Olga Pogorelova Scientific Research Institute of Structural Mechanics,Kyiv National University of Construction and Architecture, 03680 Kyiv,Ukraine
Tetiana Postnikova Scientific Research Institute of Structural Mechanics,Kyiv National University of Construction and Architecture, 03680 Kyiv,Ukraine

Ariticle ID: 199

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DOI: https://doi.org/10.59400/jam.v1i3.199

Keywords: vibro-impact, damper, primary structure, obstacle, efficiency, complex dynamics

Abstract

This article studies the dynamics and efficiency of a vibro-impact damper (single-sided vibro-impact nonlinear energy sink—SSVI NES) depending on the exciting force parameters. The damper is coupled with a linear oscillator—the primary structure. It is shown that the damper is quite effective in a wide range of the exciting force amplitude and in the range of its frequency, which are higher than the resonant frequency; damper efficiency in these regions is fairly stable. The dynamics of the vibro-impact system “primary structure—SSVI NES” is rich and complex, which, however, does not impair the damper efficiency. In complex oscillatory regimes, the damper makes bilateral impacts: it hits both an obstacle and directly against the primary structure, which actually turns a single-sided NES into a double‐sided one. The optimization procedure and the choice of optimal damper parameters play a very important role in damper design. Optimizing multiple damper parameters instead of three shows a synergistic effect and provides better results.

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Published

2023-09-12

How to Cite

Lizunov, P., Pogorelova, O., & Postnikova, T. (2023). The synergistic effect of the multiple parameters of vibro-impact nonlinear energy sink. Journal of AppliedMath, 1(3), 199. https://doi.org/10.59400/jam.v1i3.199

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