ANALYTICAL SOLUTION FOR INTERFACE FAILURE UNDER CYCLIC LOADING:2.RELOADING BEHAVIOR AND SYNTHESIS OF RESPONSE

In this study, the interface failure under the joint action of constant compression and periodical anti-plane shear were investigated. This paper is the second part of this study. With the so-called “shear beam model”, analytical solutions were presented for the evolution law and distributions of shear stress and displacement along the entire length of the shear beam during reloading processes. Results indicate that, owing to the existing of the damage process zone ahead of the crack tip, reloading is inelastic from the beginning. Furthermore, “stress locking” always occurs if a loading process cannot cover the damage zone left by its neighboring loading process. Analysis of synthesis of response presented at the end of the paper reveal two modes of structural responses: 1) contact plastic shakedown and 2) progressive failure.