ANALYSIS OF RECTANGULAR CRACKS SUBJECTED TO NON-UNIFORM LOADS IN LAYERED ROCKS
This paper analyzes the fracture mechanics of layered rocks by using the dual boundary element method(DBEM).The DBEM is based on the fundamental solutions of a layered medium.In analyzing crack problems in the layered media of an infinite extent,the DBEM degenerates into a discontinuous displacement method(DDM).In the DDM,only one crack surface is discretized,and the 9-noded continuous and discontinuous elements are used to discretize the crack surface.A rectangular crack subjected to non-uniform and compressive loads is analyzed.By using the discontinuous displacement values,the stress intensity factor(SIF) values are calculated and compared for rectangular cracks in layered rocks consisting of different rocks.