Abstract
In order to suppress the low-frequency flexural wave propagation, an Euler-Bernoulli meta-beam with periodically attached inertial amplified resonators was designed. The bandgap characteristics of the meta-beam with inertial amplified resonators were analyzed by the transfer matrix method. An adjustable low-frequency bandgap is obtained by the dynamic design of lever. Corresponding simulations were carried out. Results show that, the frequency bandgap of the meta-beam with inertial amplified resonators is much lower and wider than that with spring-mass resonators of equal mass. In addition, an adjustability of the frequency bandgap is easily achieved. This study provides guidance for the suppression of flexural waves.
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