Research On The Finite Element Simulation Of Axial Force For Carbon Fiber Reinforced Plastics Drilling

Carbon fiber reinforced plastics are widely used in aerospace and aircraft industries because of their remarkable advantages such as lightweight, high strength, high strength. However, as their properties are different with metals, those materials are difficult to machine in conventional ways, the machining defects may appear and the machining accuracy and surface quality are difficult to guarantee.Oriented to drilling of carbon fiber reinforce plastics, a machining model based on finite element method are presented in this paper, the drilling simulation of carbon fiber reinforced plastics using Deform-3D are realized, and the drilling test is established to compare the result of test and simulation.and the factors which influence the machining quality of the hole are analyzed in-depth. Establish the empirical formula by simulation data under different process parameters.(1) Study the key technologies of finite element method in the simulation machining based on the principle finite element method, it proposes the overall effort of finite element simulation in the drilling process on the characteristics of carbon fiber reinforced plastic drilling. Determine the finite element simulation overall scheme of carbon fiber reinforced plastic drilling process and emphatically analyzes the impacts of the meshing techniques on the finite element method.(2) In the paper, it establishes carbon fiber reinforced plastic drilling model based on the finite element software Deform-3D, and amends the finite element model by the actual experiment, at the same time, compares the the simulation data and experimental results. At last it can get the finite element model which can perfect forecast carbon fiber composite drilling axial force, and validates the effectiveness of the simulation model by the actual carbon fiber composite drilling experiment.(3) This paper research of the impacts of spindle speed, feed rate and cutter diameter on axial force by applying the element simulation model as established previously. And the axial force of carbon fiber reinforced plastic drilling experimental equations are developed by fitting the data of the simulation. This lays the groundwork for suppressing the production of defect and determine the reasonable process parameters for carbon fiber reinforced plastic drilling process and it plays an important role for actual engineering research later on.