PROPAGATION OF HARMONIC WAVES THROUGH A MICRO GAP CONSIDERING FRICTIONAL CONTACT

The present paper investigates the propagation of elastic waves through a micro gap for subcritical angle incidence with consideration of frictional contact. If elastic waves strike the surface of one of the solids and the amplitudes are large enough, local contact and slip may take place at the interface. Using the Fourier analysis technique and corrective solution superposition method, we manage to reduce the problem to a set of algebraic equations. Special examples for identical materials are discussed in detail. The locations and extents of the separation, slip and stick zones, the interface tractions and the slip velocities are displayed in closed form.