scholarly journals Mechanism of Plasticity Development for Ceramic Dough (Part 3)-Investigation of Extruding Characteristics and Particle Packing Structure of the Dough.

1999 ◽  
Vol 107 (1244) ◽  
pp. 372-374 ◽  
Author(s):  
Shuji KAWAI ◽  
Hideki ISHIDA ◽  
Yasuo SHIBASAKI ◽  
Kiichi ODA
Keyword(s):  
Particle Packing ◽  
Packing Structure

scholarly journals Mechanism of Plasticity Development for Ceramic Dough (Part 2) - Investigation on Plasticity by Particle Packing Structure.

1999 ◽  
Vol 107 (1241) ◽  
pp. 54-59 ◽  
Author(s):  
Shuji KAWAI ◽  
Yukari ICHIKAWA ◽  
Hideki ISHIDA ◽  
Yasuo SHIBASAKI ◽  
Kiichi ODA
Keyword(s):  
Particle Packing ◽  
Packing Structure

scholarly journals Analysis of Cohesive Microsized Particle Packing Structure Using History-Dependent Contact Models

2015 ◽  
Vol 138 (4) ◽  
Author(s):  
Raihan Tayeb ◽  
Xin Dou ◽  
Yijin Mao ◽  
Yuwen Zhang
Keyword(s):  
Particle Size ◽  
Coordination Number ◽  
Gaussian Distribution ◽  
Packing Density ◽  
Mean Value ◽  
Distribution Functions ◽  
Particle Packing ◽  
Size Distributions ◽  
Packing Structure ◽  
Contact Models

Granular packing structures of cohesive microsized particles with different sizes and size distributions, including monosized, uniform, and Gaussian distribution, are investigated by using two different history dependent contact models with discrete element method (DEM). The simulation is carried out in the framework of liggghts, which is a DEM simulation package extended based on branch of granular package of widely used open-source code LAMMPS. Contact force caused by translation and rotation, frictional and damping forces due to collision with other particles or container boundaries, cohesive force, van der Waals force, and gravity is considered. The radial distribution functions (RDFs), force distributions, porosities, and coordination numbers under cohesive and noncohesive conditions are reported. The results indicate that particle size and size distributions have great influences on the packing density for particle packing under cohesive effect: particles with Gaussian distribution have the lowest packing density, followed by the particles with uniform distribution; the particles with monosized distribution have the highest packing density. It is also found that cohesive effect to the system does not significantly affect the coordination number that mainly depends on the particle size and size distribution. Although the magnitude of net force distribution is different, the results for porosity, coordination number, and mean value of magnitude of net force do not vary significantly between the two contact models.

Influence of particle packing structure on sound velocity

2018 ◽  
Vol 27 (10) ◽  
pp. 104501
Author(s):  
Chuang Zhao ◽  
Cheng-Bo Li ◽  
Lin Bao
Keyword(s):  
Sound Velocity ◽  
Particle Packing ◽  
Packing Structure

Effects of Contact Force Model and Size Distribution on Microsized Granular Packing

2014 ◽  
Vol 136 (2) ◽  
Author(s):  
Xin Dou ◽  
Yijin Mao ◽  
Yuwen Zhang
Keyword(s):  
Particle Size ◽  
Contact Force ◽  
Van Der Waals ◽  
Van Der Waals Force ◽  
Particle Packing ◽  
Force Model ◽  
Size Distributions ◽  
Structure Variation ◽  
Packing Structure ◽  
Granular Packing

Granular packing of microsized particles with different size distributions and contact force models is studied using discrete element method (DEM). Three kinds of size distributions, monosized, uniform, and Gaussian, with mean diameter of 50, 60, and 70 μm are studied. Two aspects of microscale particle packing issues are addressed: one is the importance of van der Waals force when the particle size approaching to microscale, the other one is the structure variation caused by different contact force models. The results indicate that compared with contact force, the van der Waals force contributes very insignificantly to the final packing structure. The packing structures obtained using two different force models are similar to each other. The effects of particle size and its distribution on the packing structure are more significant than the force model.

Sign in / Sign up

Export Citation Format

Share Document