Simulation study on the influence of T700 drilling parameters on axial force

DOI:	10.11809/bqzbgcxb2023.10.044
Keywords:	carbon fiber composite; drilling simulation; finite element; thrust force; empirical formula
Abstract:	Carbon fiber composite materials are widely used in fields such as aerospace and defense equipment. Currently, the simulation study on drilling of carbon fiber composites is just beginning, and axial force affects the quality of assembly holes. Therefore, ABAQUS is used to simulate the drilling of T700 carbon fiber composites, and the variation law of axial force with process parameters is studied. The simulated axial force is compared with experimental data for analysis, verifying the rationality of the simulation model, with an error of about 15% between the axial force obtained from the experiment and from the simulation. Furthermore, based on the least squares method, the axial force is fitted using the simulation drilling data, and a regression equation is obtained. The theoretical axial force has an error of about 10% compared to the experiments axial force. After analyzing the shear damage stress cloud map under different parameters, it is concluded that at 418.67 r/s and 0.83 mm/s, the delamination factor is the smallest, and the assembly hole quantity is the best, which provides practical guidance for the drilling process of T700 carbon fiber composite materials.
Issue:	Vol. 44 No. 10 (2023)
Published:	2023-10-28
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