Magnetically Assisted Rotationally Multistable Metamaterials for Tunable Energy Trapping–Dissipation

• DOI: 10.1002/adfm.202207581
• Publication Date: 2022-10-21T19:12:26Z
• Authors: Alireza Seyedkanani; Abdolhamid Akbarz...
• Keywords: Multistability; Rotational energy

Abstract A motif for rotational multistability is developed by arranging permanent magnets in a circular pattern and creating magnet pairs with magnetically induced negative incremental torsional stiffness. Through set of experimental numerical studies, different means to tailor the response pair are demonstrated. tandem tilted elastic arms harnessed form an energy‐trapping unit cell. By stacking several these cells upon each other, 1D rotationally multistable metamaterial capable storing input energy releasing it waves developed. The periodic stable equilibrium states invoke notion cyclic multistability, which employed here realize, first time, tunable fluid‐free rotary metadamper dissipation repeating snap‐back instabilities. High tunability magnetic interactions offers new design paradigm developing reusable dissipative trapping metamaterials, properties can be easily tailored situ even at post‐fabrication stage.