In this article, we consider the interfacial characteristics of a lap joint formed using friction grip bolts. The joints consist of two elastically similar laps pressed in contact by a constant normal force and subjected to oscillatory bulk load at the free end of the laps. It is found that application of the normal load causes the contact area to jump to a characteristic length and the points where separation occurs are fixed. Bulk load applied at the free ends causes a smooth change in the size of contact and the development of the slip zones. The trends of energy dissipation with extent of contact and magnitude of tension and compression force, at various friction coefficients, have been found.
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