Finite Element Simulation of Single Abrasive Grain Cutting and Grinding Experiment Analysis of C/SiC Composites
In order to explore the removal mechanism of C/SiC composite material,a three-dimensional finite element model of single abrasive particle micro-cutting of C/SiC composite material was established.With the aid of Abaqus software,the brittle cracking model,the Johnson-Holmquist 2 model and the cohesion model were used to simulate the material properties of carbon fiber,SiC ceramic and the interface layer,and to establish a three-phase micro-cutting model to analyze different cutting speeds and the deformation law of material processing and the changing trend of cutting force under the cutting depth.The surface mor-phology was analyzed by the machining experiment of C/SiC composites with electroplated diamond cone tool.The results show that the cutting process of C/SiC composites is mainly manifested as the brittle removal of carbon fiber;as the cutting speed in-creases,the damage of the interface layer decreases and the cutting force decreases;as the cutting depth increases,the cutting force increases and the degree of interface layer damages increases.These results provide a certain reference significance for further understanding of the material removal mechanism during carbon fiber composite cutting.
C/SiC CompositesFinite Element SimulationMaterial Removal MechanismCutting Force
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