Simulation and optimization of surface roughness and cutting force in dynamic ploughing process of single crystal copper using molecular dynamics method

Document Type : Research Article

Authors

1 Mechanical engineering department, Yazd University, Yazd, Iran

2 Mechanical engineering department/Yazd University

Abstract

Surface roughness is one of the most important characteristics in nano machining products. In this paper, using molecular dynamics simulation in LAMMPS software, the process of dynamic nano ploughing of the single-crystal copper workpiece is investigated by a diamond tool, and the quality of the production surface and cutting forces were investigated as two target parameters. The effect of parameters of the dynamic nano-ploughing process such as depth of cut (DOC), amplitude (R), and frequency (ω) of cutting tool vibration on cutting force and surface roughness has been investigated by calculating average roughness (Ra). Also, in order to more closely examine the effect of parameters and their interaction with each other, the Taguchi method has been used to design experiments. The simulation results show that the characteristics of cutting depth, amplitude, and frequency of cutting tool vibration have the greatest effect on surface smoothness and cutting forces, respectively. Based on the presented results, it has been determined that the surface roughness can be improved in different machining conditions based on the selection of parameters, and it is necessary to check their conditions together well before selecting these parameters. Also, finally, by using the Taguchi method, the optimal values of dynamic ploughing parameters were obtained to achieve the best surface smoothness and the lowest cutting force in certain dimensions as described by DOC=2.5 Å, R=0.1 Å, and ω=50 KHz.

Keywords

Main Subjects

References

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Amirkabir Journal of Mechanical Engineering
Volume 55, Issue 12
March 2024
Pages 1443-1464

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