Interface damage modeled by spring boundary conditions for in-plane elastic waves
Artikel i vetenskaplig tidskrift, 2011

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.

Spring boundary condition

distribution

Delamination

reflection

Elastic waves

Boundary integral equation method

scattering

Cracks

periodic array

cracks

layered anisotropic plate

propagation

solids

Diffraction

Layered composite

Crack

transmission

Författare

Mikhail Golub

Kuban State University

Anders E Boström

Chalmers, Tillämpad mekanik, Dynamik

Wave Motion

0165-2125 (ISSN)

Vol. 48 105-115

Ämneskategorier

Maskinteknik

DOI

10.1016/j.wavemoti.2010.09.003