Impact of rigid angular particles with fully-plastic targets - Part II: Parametric study of erosion phenomena

In the accompanying paper (Papini M, Spelt JK. Impact of rigid angular part icles with fully-plastic targets. Part I: Analysis. International Journal o f Mechanical Sciences 2000;42(5):991-1006), the erosion of targets of arbit rary dynamic hardness and friction coefficient due to the impact of individ ual angular particles was analyzed with the purpose of predicting crater si ze, shape, and rebound parameters as a function of incident velocity, angle , particle orientation, and shape. A rigid-plastic model of impact was util ized, and the specific case of symmetric angular particles was studied in d etail. In this paper, the model is used to predict crater size in a paramet ric study of the effect of particle size, shape, incident velocity and orie ntation, as well as target dynamic hardness and friction coefficient. A dim ensional analysis revealed some useful relevant dimensionless parameters. T he conditions which maximize the crater size are identified for both consta nt friction and frictionless surfaces. A parametric study is presented to i dentify the effects of the most important parameters and can be used as a t ool to guide further experimentation. (C) 2000 Elsevier Science Ltd. All ri ghts reserved.