Interaction of deformation waves with internal structures in solids

Abstract eng:
Wave propagation in solids is strongly influenced by accompanying physical effects. The existence of the microstructure (internal structure) of solids leads to dispersive and/or diffraction effects. Two cases must be distinguished: (i) disordered and (ii) regular microstruc— tures. In the first case one—scale and two—scale models are analysed and it is shown that the dispersion together with nonlinearities may cause the emergence of solitary waves. The existence of the negative group velocity is demonstrated in the two—scale model. A typical regular microstructure is an embedded grating made of a different material. The diffraction pattern emerging after a wave passes through a grating is analysed assuming that the matrix and the grating both are elastic. The possible energy localization in such a process is demonstrated.

• Export as: BibTeX | MARC | MARCXML | DC | EndNote | NLM | RefWorks
• Add to your basket