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Wave propagation in 2D elastic composites with partially debonded fibres by the null field appraoch

V. V. Matus ; Y. I. Kunets ; Viktor Mykhavskiv ; Anders Boström (Institutionen för tillämpad mekanik, Dynamik) ; Chuanzen Zhang
Waves in Random and Complex Media (1745-5030). Vol. 19 (2009), 4, p. 654-669.
[Artikel, refereegranskad vetenskaplig]

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.

Denna post skapades 2009-12-14. Senast ändrad 2016-02-08.
CPL Pubid: 103484


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Institutioner (Chalmers)

Institutionen för tillämpad mekanik, Dynamik



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