Dynamic Simulation of Single Abrasive Grain Cutting TC4 Based on SPH Method

Abstract

Abstract: Considering the negative effects of mesh distortion on calculation accuracy in FEM simulation, a novel mesh free method named Smoothed Particle Hydrodynamics (SPH) method was employed to simulate the process of single CBN abrasive grain cutting TC4. Establishing a SPH model of TC4 workpiece and a FEM model of single abrasive grain with cutting edges similar to the real abrasive grain, the influences of cutting depth on grinding forces and chip formative process were studied systematically. The simulation results state that grinding forces enlarge with the increase of cutting depth, while grinding force ratio decreases. And TC4 chip formative process is also closely related with cutting depth. The simulation results have little error compared with theoretical analysis, verifying the feasibility of applying SPH method to simulate the cutting process of titanium alloy.

Key words: TC4, single CBN abrasive grain, SPH, numerical simulation

CLC Number:

TG580.1

Wang Yan, Wang Shuai, Liu Jianguo, Xiong Wei. Dynamic Simulation of Single Abrasive Grain Cutting TC4 Based on SPH Method[J]. Journal of System Simulation, 2015, 27(11): 2865-2872.

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