Flexural Wave Bandgaps in a Prestressed Multisupported Timoshenko Beam with Periodic Inerter-Based Dynamic Vibration Absorbers

Locally resonant (LR) metamaterial structures possess bandgaps in which wave propagation is significantly attenuated. In this paper, we discuss flexural an LR beam subjected to a global axial force and multiple vertical elastic supports. An array of inerter-based dynamic vibration absorbers (IDVAs) was periodically attached the beam. The band structure prestressed multisupported first derived using transfer matrix method (TMM) then explicitly illustrated through numerical example. Four were identified: bandgap located low-frequency zone, Bragg generated by scattering, two bands local resonance IDVAs. effects IDVA parameters, force, support on properties evaluated. particular, merged accompanied exchange their edge frequencies. bandwidth nearly equal sum bandwidths involved, indicating for controlling broadband splicing mechanism.