Simulation and experiment study for aero-engine turbine blade grinding descaling with single grain

In order to explore the mechanism of aero-engine turbine blade grinding descaling, simulation and experiment were carried out on PW4084 first-stage high-pressure turbine rotor blade grinding descaling with single diamond grain. The essential parameters of grinding descaling simulation model were determined by experiment and theoretical analysis. Based on the JH-2 brittle material constitutive model, the grinding descaling simulation with single grain was conducted by FEM. The grinding crack micromorphology and the influence of different grinding parameters on grinding forces were analyzed, then the correctness of simulation results were verified by experiment. The results show that the grinding cracks are direct and brightness, little plastic ridges, with the larger size of broken edge and small partially broken. As the grinding speed increases, the normal force and tangential force reduce. As the grinding depth and grain negative rake increases, the normal force and tangential force increase.