Particle Flow Simulation on Semi-Fixed Abrasive Tool Processing

2011 ◽  
Vol 487 ◽  
pp. 175-179
Author(s):  
Ping Zhao ◽  
Wei Feng Yao ◽  
Q.F. Deng ◽  
Dun Liu ◽  
Ju Long Yuan
Keyword(s):  
Abrasive Particle ◽  
Flow Simulation ◽  
Particle Flow ◽  
Particle Flow Code ◽  
Abrasive Tool ◽  
Tool Surface ◽  
Ultra Precision ◽  
Motion Characteristics ◽  
Fixed Abrasive ◽  
Particle Flow Simulation

The semi-fixed abrasive tool (SFAT) is a new tool used in the ultra-precision machining. Based on the theory of particle flow code (PFC), the abrasive particle motion characteristics of SFAT are studied in SFAT processing which is divided to workpiece pressing progress and workpiece tangential moving progress. It is conclusion that the particles are fallen out the tool surface due to the fracture of bonds under the normal force of workpiece point in the workpiece pressing progress; the particles contacting the workpiece are moved on every hand while some particles fall out the surface at the edge of abrasive tool in the workpiece tangential moving progress, and the maximum value of binding agent holding force is computed.

Particle Flow Simulation on the Influences of Property Parameters of Semi-Fixed Abrasive Plate on its ‘Trap’ Effect

2009 ◽  
Vol 69-70 ◽  
pp. 1-5 ◽  
Author(s):  
Ju Long Yuan ◽  
Zhi Wei Wang ◽  
Miao Qian ◽  
Dong Qiang Yu
Keyword(s):  
Friction Coefficient ◽  
Flow Simulation ◽  
Bonding Agent ◽  
Particle Flow ◽  
Particle Flow Code ◽  
Abrasive Particles ◽  
Element Simulation ◽  
Incidence Analysis ◽  
Influence Degree ◽  
Fixed Abrasive

This paper analyzes the property parameters influences of semi-fixed abrasive plate on the ‘trap’ effect with discrete element simulation by Particle Flow Code (PFC). The effects of the property parameters such as porosity, hardness and size of the abrasive particles, friction coefficient between the abrasive particles and the bonding agent concentration are simulated. The simulation results show that porosity, friction coefficient, bonding agent concentration has great influences on the ‘trap’ effect, while hardness and size of the abrasive particles almost have no effect. Grey incidence analysis is carried to determine the influence degree of porosity, friction coefficient, bonding agent concentration, and the results show that the most important factor is the porosity, followed by the friction coefficient, and then the bonding agent concentration.

Simulation and Analysis on the Direct Shearing of Semi-Fixed Abrasive Tool

2010 ◽  
Vol 37-38 ◽  
pp. 1157-1161
Author(s):  
Xin Ma ◽  
Qian Fa Deng ◽  
Bing Hai Lv ◽  
Yong Liang Hu ◽  
Ju Long Yuan
Keyword(s):  
Three Dimensional ◽  
Particle Flow ◽  
Particle Flow Code ◽  
Mechanical Parameters ◽  
Abrasive Tool ◽  
Two Dimensional ◽  
Horizontal Shear ◽  
Dimensional Model ◽  
Three Dimensional Model ◽  
Fixed Abrasive

This paper firstly summarizes two-dimensional numerical simulation of semi-fixed abrasive tool (SFAT), then three-dimensional model of SFAT is established by PFC3D (Particle Flow Code in 3 Dimensions). In order to make the compression ratio simulation match to experimental one about SFAT, the mechanical parameters of model are adjusted. In the direct shearing simulation, the relation between the shear stress and the horizontal shear displacement under different parallel bond stiffness are obtained. By Comparative Analysis the numerical results and test experiments of the direct shearing, the three-dimensional model of SFAT is further proven rational.

Sign in / Sign up

Export Citation Format

Share Document