Interface damage modeled by spring boundary conditions for in-plane elastic waves
Journal article, 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
Author
Mikhail Golub
Kuban State University
Anders E Boström
Dynamics
Wave Motion
0165-2125 (ISSN)
Vol. 48 2 105-115Subject Categories
Mechanical Engineering
DOI
10.1016/j.wavemoti.2010.09.003