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Interface damage modeled by spring boundary conditions for in-plane elastic waves

M. V. Golub ; Anders Boström (Institutionen för tillämpad mekanik, Dynamik)
Wave motion (0165-2125). Vol. 48 (2011), 2, p. 105-115.
[Artikel, refereegranskad vetenskaplig]

In-plane elastic wave propagation in the presence of a damaged interface is investigated. The damage is modeled as a distribution of small cracks and this is transformed into a spring boundary condition. First the scattering by a single interface crack is determined explicitly in the low frequency limit for the case of a plane wave normally incident to the interface. The transmission at an interface with a random distribution of small cracks is then determined and is compared to periodically distributed cracks. The cracked interface is then described by a distributed spring boundary condition. As an illustration the dispersion relation of the first modes in a thick plate with a damaged interface in the middle is given.

Nyckelord: Elastic waves, Spring boundary condition, Layered composite, Crack, Diffraction, Boundary integral equation method, Delamination, Cracks, distribution, layered anisotropic plate, periodic array, transmission, reflection, solids, cracks, propagation, scattering



Denna post skapades 2011-03-31. Senast ändrad 2016-02-08.
CPL Pubid: 138450

 

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Institutioner (Chalmers)

Institutionen för tillämpad mekanik, Dynamik

Ämnesområden

Teknisk mekanik

Chalmers infrastruktur