SHOCK ISOLATION THROUGH PASSIVE ENERGY PUMPING CAUSED BY NONSMOOTH NONLINEARITIES
Open accessAbstract
We investigate shock isolation designs based on nonlinear energy pumping caused by nonsmooth stiffness elements. In particular, we numerically study the shock isolation properties of a primary linear system of two coupled nonconservative oscillators with weakly coupled attachments possessing clearance nonlinearities. Under shock excitation the nonlinear attachments (termed nonlinear energy sinks — NESs) can be designed to absorb a significant portion of the input energy, thus enhancing the shock isolation performance of the primary system. In contrast to the classical linear vibration absorber whose operation is restricted to narrowband frequency ranges, the NESs are capable of efficiently absorbing energies caused by transient broadband disturbances, a feature that facilitates their implementation in practical applications. Moreover, the nonsmooth nonlinearities considered in this work are easily implementable since they are realized by means of linear stiffness elements.
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Non-smooth stiffness nonlinearities were first analyzed four years later by Georgiades et al. where a 2-DOF linear primary system was coupled to two NESs possessing a linear internal restoring spring together with a clearance stiffness.
“However, the non-smooth stiffness nonlinearities were first analyzed four years later by Georgiades et al. in [105] where 2-DOF linear primary system was coupled to two NESs possessing a linear internal restoring spring together with a clearance stiffness.”
From A review on nonlinear energy sinks: designs, analysis and applications of impact and rotary types (2023) · cites this paper as [105]
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- Authors
- GEORGIADIS, F., VAKAKIS, A. F., MCFARLAND, D. M., & BERGMAN, L.
- Affiliations
- Division of Mechanics, National Technical University of Athens, Greece
- University of Illinois Urbana-Champaign (US)
- ORCID
- MCFARLAND, D. M.
- Venue
- International Journal of Bifurcation and Chaos
- Publisher
- World Scientific Pub Co Pte Ltd
- Published
- 2005-06
- Volume
- 15
- Issue
- 06
- Pages
- 1989-2001
- ISSN
- 0218-1274 (ISSN-L)
- 1793-6551
- OpenAlex
- W2042549572
- Cited by
- 74
- References
- 0
- Citations by year
- 2026: 4 · 2025: 5 · 2024: 6 · 2023: 6 · 2022: 4 · 2021: 5 · 2020: 6 · 2019: 1 · 2018: 7 · 2017: 5 · 2016: 6 · 2015: 1 · 2014: 3 · 2013: 1 · 2012: 1
- FWCI
- 12.42
- Type
- journal article
- Language
- en
- Open access
- green
- doi.org
- Licence
- other-oa
- Locations
- International Journal of Bifurcation and Chaos (publishedVersion)
- DSpace - NTUA (National Technical University of Athens) (submittedVersion, other-oa)
- Figshare (submittedVersion, cc-by)
- Funders
- Air Force Office of Scientific Research
- 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 isolation, nonlinear energy sink, nonsmooth nonlinearities, clearance nonlinearity, vibration absorber
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