A Study on the Coefficient of Restitution Effect on Single-Sided Vibro-Impact Nonlinear Energy Sink

Adnan S. Saeed, Mohammad A. Al-Shudeifat

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

Abstract

Vibration mitigation is an essential factor in many engineering applications given the high risk of failure due to the frequent occurrence of earthquakes, blasts, collisions and fluid-structure interaction. Linear and nonlinear vibration absorbers have been continuously studied to be employed in such structures to decrease the vibration levels and therefore protect them from destruction. Up to date, the most effective and efficient passive vibration absorber is the single-sided vibro-impact (SSVI) nonlinear energy sink (NES) which consists of a small mass attached to the primary structure via linear stiffness and linear damping coupling elements in addition to a rigid barrier that enables it to engage in non-smooth inelastic impacts. It has been shown in the literature that an accurately optimized SSVI NES is capable of transferring and dissipating high percentages of the initial input energy into the primary structure. However, most of the investigations in the literature implement a coefficient of restitution of 0.7 corresponding to steel-to-steel impacts. Consequently, this paper investigates further improvements to the SSVI NES by studying the effect of changing the coefficient of restitution to increase the efficiency of targeted energy transfer (TET). It is found that lowering the coefficient of restitution increases the efficiency of the SSVI NES to transfer and dissipate energy from a large-scale nine-story structure.

Original languageBritish English
Title of host publicationPerspectives in Dynamical Systems II
Subtitle of host publicationMathematical and Numerical Approaches - DSTA, 2019
EditorsJan Awrejcewicz
PublisherSpringer
Pages287-296
Number of pages10
ISBN (Print)9783030773090
DOIs
StatePublished - 2021
Event15th International Conference on Dynamical Systems: Theory and Applications, DSTA 2019 - Łódź, Poland
Duration: 2 Dec 20195 Dec 2019

Publication series

NameSpringer Proceedings in Mathematics and Statistics
Volume363
ISSN (Print)2194-1009
ISSN (Electronic)2194-1017

Conference

Conference15th International Conference on Dynamical Systems: Theory and Applications, DSTA 2019
Country/TerritoryPoland
CityŁódź
Period2/12/195/12/19

Keywords

  • Nonlinear energy sink
  • Shock mitigation
  • Vibro-impact

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