Wave propagation in 2D elastic composites with partially debonded fibres by the null field appraoch
Artikel i vetenskaplig tidskrift, 2009

Time-harmonic plane wave propagation in a two-dimensional (2D) elastic matrix with partially debonded elastic fibres of nonclassical cross-section is investigated. The modified null field approach, taking into account the asymptotic behaviour of the solution at the interface crack-tips, is exploited to obtain the numerical results for a single scatterer. The effective medium approach based on Foldy's approximation is applied to estimate the average dynamic parameters of the composites containing randomly distributed partially debonded fibres of dilute concentration. Numerical results concern the longitudinal wave dispersion and attenuation owing to scattering by both randomly oriented and aligned fibres. The effects of the fibre shape, debonding (interface crack) size and direction of wave incidence on the effective P-wave velocity and attenuation coefficient are analysed.

Författare

V. V. Matus

Y. I. Kunets

Viktor Mykhavskiv

Anders E Boström

Chalmers, Tillämpad mekanik, Dynamik

Chuanzen Zhang

Waves in Random and Complex Media

1745-5030 (ISSN)

Vol. 19 4 654-669

Ämneskategorier

Teknisk mekanik

Strömningsmekanik och akustik

DOI

10.1080/17455030903267087