Propagation of elastic transient waves in 1d periodically heterogeneous structures

Abstract

EN: Nowadays, periodically heterogeneous structures and materials are widely used in Civil Engineering. As practical examples, one can note multi-span beams, perforated membranes and plates, stringer plates and shells, and a large variety of composite materials. Propagation of elastic waves in heterogeneous structures is accompanied by a number of remarkable dynamic effects, such as phononic band gaps, negative refraction, dynamic anisotropy and waves focusing, acoustically invisible cloaks, waves localization in structures with defects, and splash effects. For extended survey of the progress in the field, we refer to Hussein et al.