...Muhammad; C.W. Lim The present study deals with the analysis of dissipative multiresonant pillared and trampoline effect–enhanced elastic metamaterials for the amplification of local resonance bandgaps. The study is conducted through a finite element–based numerical technique and substantiated...

... ( k b a /π = 1), which gives (53) f B = 1 2 π ( π a ) 2 EI ρ A = 1083 Hz It can be seen that the Bragg frequency f B is dependent on the lattice constant a (i.e., the spatial periodicity) but has no reference to the local resonance...

... in a multilayered composite with a periodic microstructure are studied to demonstrate the difference between the Bragg scattering mechanism and the locally resonant mechanism. 17 09 2010 29 09 2011 23 04 2012 24 04 2012 acoustic metamaterials negative effective mass density band gaps...