Aiming at problems that rock is opaque and damage can not be observed easily
the method of coupling smoothed particle hydrodynamics (SPH) method with finite element method are used to investigate the mechanism and damage evolution of abrasive water jet impaction on rock which is based on J-H-C damage constitutive model. According to numerical results
the damage forms of abrasive water jet impaction on rock are staged along cross direction and long direction. The depths of abrasive water jet penetration are in relation to the shape and density of abrasive. The shape of damage caused by impaction in rock is staged. The distance from surface impacted by abrasive water jet is shorter
the damage gradient ascent violently and vice versa.