Title :
Source energy distribution and successive forwarding in layered and functionally graded elastic substructures
Author :
Glushkov, E.V. ; Glushkova, N.V. ; Fomenko, S.I.
Author_Institution :
Inst. for Math., Mech. & Inf., Kuban State Univ., Krasnodar, Russia
Abstract :
The paper is focused on the source energy distribution in vertically inhomogeneous elastic half-spaces with soft internal channels. The analysis is performed using the Fourier transform technique and Green´s matrix integral representations. Time-averaged wave energy fluxes are calculated based on the Umov-Poynting energy vector concept. The excited guided waves exhibit a peculiar effect of wave energy localization in certain, specific for each wave mode, frequency ranges. Outwardly, it looks like a successive energy forwarding from every current mode to the next one.
Keywords :
Fourier transforms; Green´s function methods; elasticity; functionally graded materials; integral equations; Fourier transform technique; Green´s matrix integral representations; Umov-Poynting energy vector concept; excited guided waves; functionally graded elastic substructures; soft internal channels; source energy distribution; successive forwarding; time-averaged wave energy fluxes; vertically inhomogeneous elastic half-spaces; wave energy localization; Coatings; Diffraction; Green products; Laminates; Nonhomogeneous media; Vectors;
Conference_Titel :
Days on Diffraction (DD), 2014
Conference_Location :
St. Petersburg
Print_ISBN :
978-1-4799-7331-6
DOI :
10.1109/DD.2014.7036428
