Molecular Dynamics Simulation of the Influence of Cutting Edge Radius on the Size Effect in Micro Cutting

2011 ◽  
Author(s):  
Qian Gan ◽  
He Ning ◽  
Li Liang ◽  
Zhao Meng
Keyword(s):  
Molecular Dynamics ◽  
Molecular Dynamics Simulation ◽  
Size Effect ◽  
Cutting Edge ◽  
Dynamics Simulation ◽  
Micro Cutting ◽  
Cutting Edge Radius ◽  
Edge Radius

Investigation of Size Effect on Micro Hardness of Machined Surface in Micro Cutting

2014 ◽  
Vol 602-605 ◽  
pp. 443-446
Author(s):  
Tao Zhang ◽  
Zhen Yu Shi ◽  
Bing Yan ◽  
Hou Jun Qi
Keyword(s):  
Size Effect ◽  
Chip Thickness ◽  
Cutting Edge ◽  
Three Dimension ◽  
Micro Hardness ◽  
Uncut Chip Thickness ◽  
Machined Surface ◽  
Micro Cutting ◽  
Cutting Edge Radius ◽  
Edge Radius

Micro cutting is a promising way for manufacturing micro parts, especially micro three dimension parts. Micro hardness is an important character to evaluate surface integrity of machined surface. Micro cutting is different from macro cutting due to size effect of specific cutting energy because of the influence of the ratio of uncut chip thickness to cutting edge radius. A group of micro cutting experiments were conducted to investigate the cutting parameters on the micro hardness of machined surface. The micro hardness of machines surface decreases with the ratio of uncut chip thickness to cutting edge radius first, and then increase when the uncut chip thickness is smaller than the cutting edge radius. The micro hardness shows size effect due to the machined surface compressed twice with the round cutting edge. The micro hardness decreases with the distance increasing far away from the machined surface.

Investigation on Mechanism of Ultra-Smoothed Surface with a Micro Slot on the Flank Face in Micro Cutting

2014 ◽  
Vol 651-653 ◽  
pp. 764-767
Author(s):  
Tao Zhang ◽  
Hou Jun Qi ◽  
Gen Li
Keyword(s):  
Surface Roughness ◽  
Chip Thickness ◽  
Cutting Edge ◽  
Back Side ◽  
Uncut Chip Thickness ◽  
Micro Cutting ◽  
Cutting Edge Radius ◽  
Edge Radius ◽  
Flank Face ◽  
Side Flow

Micro cutting is a promising manufacturing method to obtain good surface integrity. Surface roughness shows size effect when the uncut chip thickness is smaller than the cutting edge radius. A special micro slot on the flank face of cutting tools was manufactured with discharge. Two groups of micro orthogonal cutting were conducted. The surface roughness of machined surface was measured and compared to each other. The results show that surface roughness decreases first and then increases with the ratio of uncut chip thickness to cutting edge radius. The surface machined with micro slot is better than that of without micro slot due to the micro slot restrain the back side flow of work piece based on the finite element model.

Size effect during two-particle agglomeration: Results of molecular dynamics simulation

2009 ◽  
Vol 73 (8) ◽  
pp. 1030-1033 ◽  
Author(s):  
L. E. Kar’kina ◽  
I. N. Kar’kin ◽  
Yu. N. Gornostyrev ◽  
L. I. Yakovenkova
Keyword(s):  
Molecular Dynamics ◽  
Molecular Dynamics Simulation ◽  
Size Effect ◽  
Dynamics Simulation ◽  
Particle Agglomeration
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