Discrete-to-continuum approaches to the mechanics of pentamode bearings. (1st May 2017)

• Record Type: Journal Article
• Authors: Fabbrocino, Francesco; Amendola, Ada
• Is Part Of: Composite structures. Volume 167(2017)
• Page Start: 219
• Page End: 226
• Publication Date: 2017-05-01
• Subjects: Periodic lattices -- Elastic moduli -- Multiscale approaches -- Seismic isolation; Composite construction -- Periodicals; Composites -- Périodiques; 624.18
• DOI: 10.1016/j.compstruct.2017.01.073
• Languages: English
• ISSNs: 0263-8223

Abstract

Abstract: This work deals with the multiscale modeling of the mechanical response of pentamode lattices, and a preliminary study on engineering applications of structural bearings formed by pentamode lattices confined between stiffening plates. Numerical and experimental results show that the confinement effect played by the stiffening plates, the geometry and mechanical properties of the junctions strongly influence the overall stiffness properties of such structures. As a result, the mechanics of confined pentamode lattices significantly differs from that of unconfined lattices, being able to accommodate compression and tension vertical loads, and featuring performance-based response under shear loading. Their application for use in anti-seismic system development and/or as shear-wave band gap systems awaits attention.