Three-dimensional molecular dynamics analysis of processing using a pin tool on the atomic scale

A three-dimensional model of molecular dynamics (MD) is proposed to study the effects of tool geometry and processing resistance on the atomic-scale cutting mechanism. The model includes the utilization of the Morse potential function to simulate the interatomic force between the workpiece and a tool. The results show that the cutting resistance increases with the angle of the pin tool and the depth of cut, and the cutting force is essentially constant over the range of velocities simulated. In addition, the obtained cutting resistance of present MD simulation exhibits an evident relationship to the ratio of the vertical and the horizontal contact area between the tool and the workpiece within the range of a pin angle of 90-150°. Finally, work hardening and stick-slip phenomena during the process are also observed.

[1]  Jun Shimizu,et al.  Molecular dynamics simulation of friction on the atomic scale , 1998 .

[2]  Irving F. Stowers,et al.  Simulation of Nanometer-Scale Deformation of Metallic and Ceramic Surfaces , 1993 .

[3]  G. McClelland,et al.  Atomic-scale friction of a tungsten tip on a graphite surface. , 1987, Physical review letters.

[4]  Hiroaki Tanaka,et al.  Towards a deeper understanding of wear and friction on the atomic scale—a molecular dynamics analysis , 1997 .

[5]  Uzi Landman,et al.  Atomistic Mechanisms and Dynamics of Adhesion, Nanoindentation, and Fracture , 1990, Science.

[6]  I. F. Stowers,et al.  A molecular dynamics model of the orthogonal cutting process , 1990 .

[7]  Berend Smit,et al.  Understanding molecular simulation: from algorithms to applications , 1996 .

[8]  Yoshitada Isono,et al.  Three-Dimensional Molecular Dynamics Simulation of Atomic Scale Precision Processing Using a Pin Tool. , 1997 .

[9]  J. M. Haile,et al.  Molecular dynamics simulation : elementary methods / J.M. Haile , 1992 .

[10]  Jacobsen,et al.  Thermal Diffusion Processes in Metal-Tip-Surface Interactions: Contact Formation and Adatom Mobility. , 1996, Physical review letters.

[11]  Donald W. Brenner,et al.  Nanoscale investigation of indentation, adhesion and fracture of diamond (111) surfaces , 1992 .

[12]  J. Dieleman,et al.  Direct writing in Si with a scanning tunneling microscope , 1989 .

[13]  N. Chandrasekaran,et al.  Effect of tool geometry in nanometric cutting: a molecular dynamics simulation approach , 1998 .

[14]  Yoshitada Isono,et al.  Molecular Dynamics Simulations of Atomic Scale Indentation and Cutting Process with Atomic Force Microscope , 1999 .

[15]  R. Colton,et al.  Atomistic mechanisms of adhesion and compression of diamond surfaces , 1991 .

[16]  D. Rugar,et al.  Thermomechanical writing with an atomic force microscope tip , 1992 .

[17]  K. Maekawa,et al.  Friction and tool wear in nano-scale machining—a molecular dynamics approach , 1995 .

[18]  P. Stoltze.  Simulation of surface defects , 1994 .

[19]  C. H. Moon,et al.  A Study on the Microcutting for Configuration of Tools using Molecular Dynamics , 1995 .

[20]  U. Landman,et al.  Atomistic mechanisms of adhesive contact formation and interfacial processes , 1992 .

[21]  Y. Samitsu.  A Study of Atomic Scale Processing using an Atomic Force Microscope. , 1995 .