Omnidirectional flexural invisibility of multiple interacting voids in vibrating elastic plates.

ABSTRACT: In elasticity, the design of a cloaking for an inclusion or a void to leave a vibrational field unperturbed by its presence, so to achieve its invisibility, is a thoroughly analysed, but still unchallenged, mechanical problem. The 'cloaking transformation' concept, originally developed in electromagnetism and optics, is not directly applicable to elastic waves, displaying a complex vectorial nature. Consequently, all examples of elastic cloaking presented so far involve complex design and thick coating skins. These cloakings often work only for problems of unidirectional propagation, within narrow ranges of frequency, and considering only one cloaked object. Here, a new method based on the concept of reinforcement, achieved via elastic stiffening and mass redistribution, is introduced to c

SUBMITTER: Misseroni D 

PROVIDER: S-EPMC6784387 | biostudies-literature | 2019 Sep

REPOSITORIES: biostudies-literature