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Effective spring boundary conditions for a damaged interface between dissimilar media in three-dimensional case

M.V. Golub ; O.V. Doroshenko ; Anders Boström (Institutionen för tillämpad mekanik, Dynamik)
International Journal of Solids and Structures (0020-7683). Vol. 81 (2016), p. 141–150.
[Artikel, refereegranskad vetenskaplig]

Elastic waves in the presence of a damaged interface between two dissimilar elastic media is investigated in the three-dimensional case. The damaged is modeled as a stochastic distribution of equally sized circular cracks which is transformed into a spring boundary condition. First the scattering by a single circular interface crack between two dissimilar half-spaces is investigated and solved explicitly for normally incident waves in the low frequency limit. The transmission by a distribution of cracks is then determined and is transformed into a spring boundary condition, where effective spring stiffnesses are expressed in terms of elastic moduli and damage parameters. A comparison with previous results for a periodic distribution of cracks shows good agreement.

Nyckelord: Crack, Delamination, Diffraction, Dissimilar materials, Elastic waves, Imperfect contact, Spring boundary condition, Spring stiffness

Denna post skapades 2016-02-08. Senast ändrad 2016-03-09.
CPL Pubid: 231778


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Institutioner (Chalmers)

Institutionen för tillämpad mekanik, Dynamik


Teknisk mekanik

Chalmers infrastruktur