Study On Simulation And Experiment Of Grinding Force Of SiCp/Al Composite Material

Silicon carbide particle reinforced aluminum matrix composites (SiCp/Al) havemany outstanding properties such as high specific strength and high specific modules,good wear resistance, low thermal expansion, which make them will increasingly beused in the areas of aeronautics and astronautics, automobile and electron, etc. However,the machining of SiCp/Al composite is very difficult as the rigidity of its internalreinforced phase and workpiece precision is very low. Grinding is a manufacturingprocess that involves the removal of metal by employing abrasives. Generally, grindingis considered to be the finishing process that is usually used for obtaininghigh-dimensional accuracy and better surface finish.In this paper, the surface grinding of SiCp/Al composite with high volume wascarried out. The influences of grinding parameters including workpiece feed rate and thedepth of grinding on grinding forces were investigated. The main research contents weresummarized as follows:First, the single grit finite element grinding model for SiCp/Al composite has beenbuilt by using the finite element software ABAQUS/Explicit based on the grindingtheory. The grinding process of different volume fraction SiCp/Al was simulated. Theinfluences of workpiece feed rate and the depth of grinding on grinding forces wereinvestigated in theory.Secend, the experiment of surface grinding of SiCp/Al composite with highvolume fraction was carride out by using diamond grinding wheel. The influences ofworkpiece feed rate and the depth of grinding on grinding forces were investigated.Through the experimental results, the feasibility and the accuracy of the finite elementsimulation model were verified.And the end, the grinding surface quality was analysed by surface roughness andmicrostructure of the grinding surface.The main results of the study showed that: with the increasing of the workpiecefeed rate and the depth of grinding, the grinding force increased. The finite element simulation model of grinding force in this paper is accurate.