A comparison of two models to predict grinding forces from wheel surface topography

摘要: Abstract Two computer models developed at Trinity College, which can be used to predict the forces generated in grinding and calculate theoretical charts, are presented. Comparisons made between predicted from each model measured experiments. The first is based on Challen Oxley's two-dimensional (2-D) plane-strain slip-line field theory [1] [An explanation of different regimes friction wear using asperity deformation models, Wear 53 (1978) 229–243]. second Williams Xie's three-dimensional (3-D), pyramid-shaped [2] , [3] [4] [The generation surfaces by interaction parallel grooves, 155 (1992) 363–379; worn repeated 164 (1993) 864–872; prediction when a soft surface slides against harder rough surface, 196 (1996) 21–34] generates series grooves material. Both methods grit–workpiece interface as rigid plastic contact whose behaviour depends local grit slope interfacial coefficient Inputs both material properties workpiece. calculated distribution average slopes function increasing depth into wheel, determined wheel profiles. In addition, 3-D uses density distance adjacent grooves. Grinding tests were performed bearing steel specimens tool measured. correlation experimental was satisfactory. most accurate predictions achieved with model.