Feasibility Study of a Fully Compliant Nonlinear Stiffness Mechanism
Publication: ASCE Inspire 2023
ABSTRACT
Passive vibration mitigation using nonlinear stiffness couplings is a potential area for enabling structures to mitigate unwanted vibrations. Nonlinearity in stiffness is important in passive vibration mitigation because it can lead to additional vibration modes, which may be used to dissipate energy efficiently. Typically, the nonlinear stiffness is implemented using a combination of partially compliant positive and negative stiffness elements resulting in high mechanical complexity, poor compactness, high friction, and high maintenance cost. There is a need to develop fully compliant nonlinear stiffness devices with low mechanical complexity, compactness, and maintenance cost. First, a high aspect ratio serpentine beam configuration is selected. Second, a parametric study on a simplified computational model is conducted to match the desired nonlinearity in stiffness. The optimum design is fabricated, and the nonlinear stiffness response is experimentally validated. These nonlinear devices have potential applications in civil, aerospace, automotive, and energy harvesting.
Get full access to this article
View all available purchase options and get full access to this chapter.
REFERENCES
Al-Shudeifat, M. A. (2015). Asymmetric Magnet-Based Nonlinear Energy Sink [Article]. Journal of Computational and Nonlinear Dynamics, 10(1), Article 014502. https://doi.org/10.1115/1.4027462.
Andersen, D., Starosvetsky, Y., Vakakis, A., and Bergman, L. (2012). Dynamic instabilities in coupled oscillators induced by geometrically nonlinear damping. Nonlinear Dynamics, 67, 807–827.
Chen, Y., Su, W., Tesfamariam, S., Qian, Z., Zhao, W., Yang, Z., and Zhou, F. (2023). Experimental study of magnetic bistable nonlinear energy sink for structural seismic control [Article]. Soil Dynamics and Earthquake Engineering, 164, Article 107572. https://doi.org/10.1016/j.soildyn.2022.107572.
Georgiadis, F., Vakakis, A. F., McFarland, D. M., and Bergman, L. A. (2005). Shock Isolation through Passive Energy Pumping Caused by nonsmooth nonlinearities. Int. J. Bifurc. Chaos, 15, 1989–2001.
Gourdon, E., Alexander, N. A., Taylor, C. A., Lamarque, C. H., and Pernot, S. (2007). Nonlinear energy pumping under transient forcing with strongly nonlinear coupling: Theoretical and experimental results. Journal of Sound and Vibration, 300(3), 522–551. https://doi.org/https://doi.org/10.1016/j.jsv.2006.06.074.
He, X., Wu, J., Wang, C., and Ye, M. (2018). Historical Earthquakes and Their Socioeconomic Consequences in China: 1950⁻2017. Int J Environ Res Public Health, 15(12). https://doi.org/10.3390/ijerph15122728.
Lu, Z., Wang, Z., Zhou, Y., and Lu, X. (2018). Nonlinear dissipative devices in structural vibration control: A review [Review]. Journal of Sound and Vibration, 423, 18–49. https://doi.org/10.1016/j.jsv.2018.02.052.
Qaiser, Z., Kang, L., and Johnson, S. (2017). Design of a bioinspired tunable stiffness robotic foot. Mechanism and Machine Theory, 110, 1–15. https://doi.org/https://doi.org/10.1016/j.mechmachtheory.2016.12.003.
Wang, J., Wierschem, N. E., Spencer, B. F., Jr., and Lu, X. (2015). Track Nonlinear Energy Sink for Rapid Response Reduction in Building Structures [Article]. Journal of Engineering Mechanics, 141(1), Article Unsp 04014104. https://doi.org/10.1061/(asce)em.1943-7889.0000824.
Information & Authors
Information
Published In
ASCE Inspire 2023
Pages: 298 - 303
History
Published online: Nov 14, 2023
ASCE Technical Topics:
- Architectural engineering
- Benefit cost ratios
- Building management
- Business management
- Continuum mechanics
- Coupling
- Dynamics (solid mechanics)
- Energy dissipation
- Engineering fundamentals
- Engineering mechanics
- Feasibility studies
- Financial management
- Maintenance and operation
- Methodology (by type)
- Mitigation and remediation
- Motion (dynamics)
- Practice and Profession
- Research methods (by type)
- Solid mechanics
- Stiffening
- Structural behavior
- Structural engineering
- Structural members
- Structural systems
- Thermodynamics
- Vibration
Authors
Metrics & Citations
Metrics
Citations
Download citation
If you have the appropriate software installed, you can download article citation data to the citation manager of your choice. Simply select your manager software from the list below and click Download.