![]() ![]() I will then address whether the topological attributes of Maxwell lattices, which are native to in-plane mechanics, can be exported to the out-of-plane response. Aided by laser vibrometry experimental data, I will show how the zero-energy floppy edge modes predicted for ideal configurations morph into finite-frequency wave modes that localize on selected edges, resulting in asymmetric wave transport regimes. I will first discuss the dynamics of lattices in which the ideal hinges that appear in the theoretical models are replaced by structural ligaments capable of supporting bending deformation – a scenario practically encountered in lattices fabricated using cutting techniques or 3D printing. I will address the opportunities for design that open up when we account for the effect of structural non-idealities and we shift our focus to the dynamic behavior. While these systems have been the object of extensive theoretical investigation, their classical treatment has been limited to ideal configurations and confined to the static limit. In this talk, I discuss the mechanics of a class of metamaterials known as topological Maxwell lattices. Topological metamaterials are a special subclass of metamaterials whose behavior is directly controlled by the topology of their phonon bands. Stefano Gonella - University of Minnesota, Minneapolis, MNĭate: Time: 2:30 PM Location: UTEB 150Ībstract: Elastic metamaterials are structural materials that owe their unique wave manipulation capabilities to their complex internal architecture. ![]() ![]() Topological metamaterials and the quest for floppy edges that can trap waves ![]()
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