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Cited by 80Vibration Control and Rheological FluidsVibration and Dynamic AnalysisAcoustic Wave Phenomena Research

Shock Mitigation by Means of Low- to High-Frequency Nonlinear Targeted Energy Transfers in a Large-Scale Structure

AL-Shudeifat, Mohammad A., Vakakis, Alexander F., Bergman, Lawrence A.·2016·Journal of Computational and Nonlinear Dynamics
DOI 10.1115/1.4030540
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Abstract

In this computational study, the implementation of passive nonlinear vibro-impact attachments (termed nonlinear energy sinks (NESs)) for shock mitigation of an otherwise linear multistory large-scale structure is investigated. This is achieved by inducing passive targeted energy transfer (TET) from the fundamental (lowest-frequency and most energetic) structural mode to high-frequency modes, through a series of vibro-impacts induced by the attachments. The functionality of the passive attachments is based on single-sided vibro-impacts (SSVIs), enabling rapid and one-way scattering of shock energy from low- to high-frequency structural modes. Hence, redistribution of shock energy in the modal space of the structure occurs as energy gets nonlinearly scattered to high frequencies. In turn, this energy scattering rapidly reduces the overall amplitude of the transient structural response, and increases the effective dissipative capacity of the integrated NES-structure assembly. The effective modal dissipation rates of the integrated assembly can be controlled by the inherent damping of the NESs, and can be qualitatively studied in detail by defining appropriate dissipative measures which track the TETs from low- and high-frequency structural modes. Ideally, the optimized NESs can passively scatter up to 80% of the input shock energy from the fundamental structural mode to high-frequency modes in the limit when their inherent damping is zero and the coefficient of restitution during vibro-impacts is unity. When dissipative effects are introduced into the NESs, additional energy exchanges between the NESs and high-frequency modes occur. Our study facilitates the predictive design of vibro-impact NESs for optimal and rapid shock mitigation of large-scale structures.

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  • After first successful realization of SSVI NES in a 2-story linear primary structure, a series of publications followed on a large-scale 9-story structure coupled with two SSVI NES in the eighth and ninth floors.

    “After the first successful realization of SSVI NES in [107] in which a 2-story linear primary structure was considered, series of publications in which a large-scale 9-story structure coupled with two SSVI NES in the eighth and ninth floors followed [106,109,110].”

    From A review on nonlinear energy sinks: designs, analysis and applications of impact and rotary types (2023) · cites this paper as [106]

  • In these large-scale structures, the SSVI NES dissipated significant energy during the highly energetic initial phase through consecutive inelastic impacts and redistribution and dissipation of a portion of energy at high frequency modes.

    “In these large-scale structures, the SSVI NES was able to dissipate significant amount of energy during the highly energetic initial phase of excitation through consecutive inelastic impacts and the redistribution and dissipation of portion of the energy at high frequency modes.”

    From A review on nonlinear energy sinks: designs, analysis and applications of impact and rotary types (2023) · cites this paper as [106]

  • The largest test bed for TET testing is the 11-ton 9-story steel frame structure investigated in [106,109,110] for seismic and shock mitigations using SSVI NESs and Type I NESs.

    “To the author's knowledge, the largest test bed for TET testing is the 11-ton 9-story steel frame structure investigated in [106,109,110] for seismic and shock mitigations using SSVI NESs and Type I NESs.”

    From A review on nonlinear energy sinks: designs, analysis and applications of impact and rotary types (2023) · cites this paper as [106]

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References 32 · Cited by 80

Research works printed but not linked: 32

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Authors
AL-Shudeifat, M. A., Vakakis, A. F., & Bergman, L. A.
Affiliations
  • Khalifa University of Science and Technology (AE)
  • University of Illinois Urbana-Champaign (US)
ORCID
Venue
Journal of Computational and Nonlinear Dynamics
Publisher
ASME International
Published
2015-08-26
Volume
11
Issue
2
ISSN
  • 1555-1415 (ISSN-L)
  • 1555-1423
DOI
10.1115/1.4030540
OpenAlex
W1690917398
Cited by
80
References
32
Citations by year
2026: 1 · 2025: 7 · 2024: 14 · 2023: 4 · 2022: 6 · 2021: 9 · 2020: 8 · 2019: 11 · 2018: 9 · 2017: 3 · 2016: 8
FWCI
11.03
Type
journal article
Language
en
Open access
closed
Locations
Journal of Computational and Nonlinear Dynamics (publishedVersion)
Topics
  • Physical Sciences › Engineering › Civil and Structural Engineering › Vibration Control and Rheological Fluids
  • Physical Sciences › Engineering › Control and Systems Engineering › Vibration and Dynamic Analysis
  • Physical Sciences › Engineering › Biomedical Engineering › Acoustic Wave Phenomena Research
Keywords
shock mitigation, nonlinear energy sink, targeted energy transfer, large-scale structure, multi-storey buildings, passive vibration control, coefficient of restitution, internal friction

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