Parametric studies of wave propagation through imperfect interfaces using micromechanics based effective stiffness

Abstract

Plane wave propagation through contact between solids has been investigated using imperfectly bonded interface model. In this model, the contact behavior is represented through effective interface stiffnesses. We have developed a micromechanical methodology for determining complex-valued effective normal and shear interface stiffnesses by considering asperity contact interactions. The methodology incorporates effects of surface roughness, anisotropy, existing stress conditions and rate-dependent asperity contacts. We use the derived effective stiffnesses to elucidate wave transmission phenomena exhibited by interfaces. © 2008 American Institute of Physics.