Germanos Cleante, Vinicius [UNESP]Brennan, Michael John [UNESP]Paupitz Gonçalves, Paulo José [UNESP]Carneiro, Jean Paulo [UNESP]2023-07-292023-07-292023-01-01Mechanisms and Machine Science, v. 125 MMS, p. 703-712.2211-09922211-0984http://hdl.handle.net/11449/249363Metamaterials are employed to reduce vibration levels by exploiting the effects of structural periodicity. When structural elements are arranged in a periodic pattern, they act as mechanical filters, creating stop-bands. The term stop-band is often used for infinite structures, but a more appropriate term for a finite structure is attenuation band. A way of obtaining this effect is by attaching vibration absorbers, which create a local resonance stop-band plus a Bragg stop-band. The local resonance stop-band is controlled only by the properties of the attached device. The Bragg stop-band depends on the interaction between the host cell and the device. The combination of these two effects can create an attenuation zone – the so-called super attenuation band. Recent works on finite mono-coupled metamaterials have shown that asymmetric periodic structures have better attenuation properties when compared to the symmetric ones, if they are correctly orientated. This paper investigates the formation of a super attenuation band in a finite mono-coupled structure using vibration absorbers. The system is defined by the formation of a cell, which repeats along with the whole structure. The cell can be divided into sub-cells with equal or different dynamic properties. The dynamic features to form the super attenuation band are determined from the displacement transmissibility of a single cell. This analysis is extended to several cells. The results show that a super attenuation band can only occur when each attached vibration absorber is optimally tuned to its corresponding host cell in a structure comprising cells with dynamical asymmetry.703-712engAsymmetricFinite structureMono-coupledSuper attenuation bandSuper stop-bandTrabalho apresentado em evento10.1007/978-3-031-15758-5_722-s2.0-85141755813