Origami-type mechanical devices, initially designed for aerospace purposes due to their lightweight and foldable characteristics, exhibit unique nonlinear stiffness. Particularly, when suitably designed, they show Quasi-Zero Stiffness (QZS) characteristics within a specific performing range. The QZS property, aligned with the High Static Low Dynamic (HSLD) stiffness concept, brings an ideal passive vibration isolator to applications, especially for low-frequency vibrations. In this study, the vibration isolation capabilities of Origami-inspired suspensions, focusing on their viability as low-frequency passive vibration isolators, is investigated. Kresling Origami Module (KOM), stemmed from the compact design and compatibility with 3D printing technologies, is chosen. The investigation included a detailed analysis using 3D CAD, Finite Element Analysis, and experimental testing. The influence of geometric parameters on the nonlinear Force-Displacement curve is explored. Low-frequency isolation properties are confirmed by multibody simulations within the QZS region, but differences are recognized in dynamic properties beyond this range. The research underscored the transformative potential of Origami-type metamaterials in improving low-frequency vibration isolation technology. Challenges related to material properties and loading mass variations are discussed, providing valuable insights for future developments in this promising domain.
THEORETICAL AND EXPERIMENTAL INVESTIGATION ON NOVEL NONLINEAR SUSPENSION BASED ON ORIGAMI METASTRUCTURE CONCEPT / Ebrahimnejad, R.; Molaie, M.; Zippo, A.; Iarriccio, G.; Pellicano, F.. - (2024). (Intervento presentato al convegno 30th International Congress on Sound and Vibration, ICSV 2024 tenutosi a nld nel 2024).
THEORETICAL AND EXPERIMENTAL INVESTIGATION ON NOVEL NONLINEAR SUSPENSION BASED ON ORIGAMI METASTRUCTURE CONCEPT
Molaie M.;Zippo A.;Iarriccio G.;Pellicano F.
2024
Abstract
Origami-type mechanical devices, initially designed for aerospace purposes due to their lightweight and foldable characteristics, exhibit unique nonlinear stiffness. Particularly, when suitably designed, they show Quasi-Zero Stiffness (QZS) characteristics within a specific performing range. The QZS property, aligned with the High Static Low Dynamic (HSLD) stiffness concept, brings an ideal passive vibration isolator to applications, especially for low-frequency vibrations. In this study, the vibration isolation capabilities of Origami-inspired suspensions, focusing on their viability as low-frequency passive vibration isolators, is investigated. Kresling Origami Module (KOM), stemmed from the compact design and compatibility with 3D printing technologies, is chosen. The investigation included a detailed analysis using 3D CAD, Finite Element Analysis, and experimental testing. The influence of geometric parameters on the nonlinear Force-Displacement curve is explored. Low-frequency isolation properties are confirmed by multibody simulations within the QZS region, but differences are recognized in dynamic properties beyond this range. The research underscored the transformative potential of Origami-type metamaterials in improving low-frequency vibration isolation technology. Challenges related to material properties and loading mass variations are discussed, providing valuable insights for future developments in this promising domain.Pubblicazioni consigliate
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