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Modeling of imperfect contact interfaces in sonic composites
Author(s) -
Munteanu Ligia,
Brişan Cornel
Publication year - 2015
Publication title -
pamm
Language(s) - English
Resource type - Journals
ISSN - 1617-7061
DOI - 10.1002/pamm.201510159
Subject(s) - classification of discontinuities , imperfect , materials science , composite material , interface (matter) , spheres , polarization (electrochemistry) , matrix (chemical analysis) , epoxy , physics , contact angle , mathematics , mathematical analysis , chemistry , linguistics , sessile drop technique , astronomy , philosophy
In this paper, the tangential and normal discontinuities at the interface between the scatterer and the matrix are independently modeled, and these relative displacements are directly proportional to the corresponding components of tractions at the interface. The generation of full band‐gaps is investigated on the basis of the derived imperfect interface conditions for a sonic plate with an array of acoustic piezoceramic hollow spheres scatterers embedded in an epoxy matrix. The scatterers are made from functionally graded materials with radial polarization. Numerical evaluation has shown that imperfect interface may have a significant effect on the increasing of the length of the full band‐gaps. (© 2015 Wiley‐VCH Verlag GmbH & Co. KGaA, Weinheim)