The propagation of interlayer cracks and the resulting failure of the interface is a typical mode occurring in rock engineering and masonry structure.On the basis of the theory of elastoplasticity and fracture mechanics,the shear beam model for the solution of interface failure was presented.The concept of cohesive crack.was adopted to describe the constitutive behavior of the cohesive interfacial layer.Related fundamental equations such as equilibrium equation,constitutive equations were presented.The behavior of a double shear beam bonded through cohesive layer was analytically calculated.The stable propagation of interface crack and process zone was investigated.
Barenblatt G I.The mathematical theory of equilibrium cracks in brittle fracture[A].In:H L Dryden and Thvon Karman,Eds.Advances in Appl Mech[C].New York:Academic Press,1962,55-120.
Dugdale D S.Yielding of steel sheets containing slits[J].J Mech Phys Solids,1960,8(1):100-104.
Jarzebowski A,Mroz Z.On slip and memory rules in elastic,friction contact problems[J].Acta Mech,1994,102(1):119-216.
Mroz Z,Stupkiewicz S.Hysteretic effects and progressive delamination at composite interfaces[A].In:R Pyrz Ed.IUT AM Symp on Micro structure Property Interactions in Composite Materials[C].Kluwer AC Publ,1995,247-264.