Elasto-Dynamic Behavior Of A 2D Square Lattice With Entrained Fluid

摘要: Numerical investigation of wave propagation in a cellular solid with closed cells configuration and entrained fluid showed an existence two types pressure waves, which have opposite polarization different phase group velocities. This is agreement the Biot's theory, unless that slow appears beyond first resonant frequency skeleton members. In order to explain this fact we propose analytical machro-mechanical model study dynamical modes contribution.