Effective spring boundary conditions for a damaged interface between dissimilar media in three-dimensional case
Artikel i vetenskaplig tidskrift, 2016

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.

Spring boundary condition

Delamination

Dissimilar materials

Elastic waves

Spring stiffness

Diffraction

Crack

Imperfect contact

Författare

M.V. Golub

O.V. Doroshenko

Anders E Boström

Chalmers, Tillämpad mekanik, Dynamik

International Journal of Solids and Structures

0020-7683 (ISSN)

Vol. 81 141-150

Ämneskategorier

Maskinteknik

DOI

10.1016/j.ijsolstr.2015.11.021