scholarly journals A Simulation Model for Determining the Mechanical Properties of Rapeseed using the Discrete Element Method

2015 ◽  
Vol 59 (4) ◽  
pp. 575-582 ◽  
Author(s):  
Kornél Tamás ◽  
Bernát Földesi ◽  
János Péter Rádics ◽  
István J. Jóri ◽  
László Fenyvesi
Keyword(s):  
Mechanical Properties ◽  
Discrete Element Method ◽  
Simulation Model ◽  
Discrete Element ◽  
Element Method

Numerical Simulation of Mechanical Properties of Reinforced Red-Sandstone Granular Soil Based on 3D Discrete Element Method

2013 ◽  
Vol 353-356 ◽  
pp. 802-805
Author(s):  
Jian Qing Jiang
Keyword(s):  
Mechanical Properties ◽  
Discrete Element Method ◽  
Triaxial Compression ◽  
Discrete Element ◽  
Reinforced Soil ◽  
Triaxial Tests ◽  
Granular Soil ◽  
Compression Tests ◽  
Red Sandstone ◽  
Element Method

Red-sandstone granular soil reinforced with gabion-mesh is a new concept of composite reinforced soil. In order to reveal the mechanical properties of this composite reinforced soil, a series of laboratory triaxial compression tests on specimens reinforced with gabion-mesh were carried out, and 3D discrete element method was introduced to simulate the triaxial tests. The macro stress-strain relation of red-sandstone specimens reinforced with gabion-mesh was reproduced by the 3D discrete element model. The results show that 3D discrete element method is an ideal technique to study the meso-mechanical nature characteristics of gabion-mesh reinforced red-sandstone granular soil.

Discrete Element Method Analysis of Mechanical Properties of Railway Ballast during Tamping Process under Different Amplitude

2012 ◽  
Vol 233 ◽  
pp. 224-227 ◽  
Author(s):  
Tao Yong Zhou ◽  
Bin Hu ◽  
Xue Jun Wang ◽  
Bo Yan
Keyword(s):  
Mechanical Properties ◽  
Discrete Element Method ◽  
Simulation Analysis ◽  
Discrete Element ◽  
Practical Experience ◽  
Field Trials ◽  
Analysis Model ◽  
Railway Ballast ◽  
Element Analysis ◽  
Element Method

Railway ballast tamping operations is an important work in the line maintenance and repair operations, the selection of tamping parameter is usually dependent on field trials and practical experience, for the mechanical properties of railway ballast is difficult to measure and describe. This paper creates discrete element analysis model of railway ballast using the discrete element method, the numerical simulations are carried out to study the mechanical properties of railway ballast during tamping process. We focus on the influence of amplitude during tamping process; an optimal amplitude of the simulation analysis is obtained and compared with the recommended amplitude of Plasser & Theurer Company, it is found that the two amplitudes accord. This result verifies the correct validity of the discrete element analysis model of railway ballast during tamping process.

scholarly journals Analysis of particle dynamics in a pin mill by Discrete Element Method

2021 ◽  
Vol 249 ◽  
pp. 07010
Author(s):  
Wei Pin Goh ◽  
Mojtaba Ghadiri
Keyword(s):  
Mechanical Properties ◽  
Particle Size ◽  
Discrete Element Method ◽  
Discrete Element ◽  
Particle Dynamics ◽  
Operating Conditions ◽  
Impact Testing ◽  
Process Conditions ◽  
Pharmaceutical Industries ◽  
Element Method

Milling is an important process for tailoring the particle size distribution for enhanced attributes, such as dissolution, content uniformity, tableting, etc., especially for active pharmaceutical ingredients and excipients in pharmaceutical industries. Milling performance of particulate solids depends on the equipment operating conditions (geometry, process conditions and input energy etc.) as well as material properties (particle size, shape, and mechanical properties, such as Young’s modulus, hardness and fracture toughness). In this paper the particle dynamics in a pin mill is analysed using Discrete Element Method (DEM), combined with a novel approach for assessing particle breakability by single particle impact testing. A sensitivity analysis is carried out addressing the effect of the milling conditions (rotational speed and feed particle flow rate), accounting for feed mechanical properties on the breakage behaviour of the particles. Particle collision energy spectra are calculated and shown to have a distribution with the upper tail end being close to the maximum energy associated with the collision with the rings. Breakage is primarily due to collisions with the rings, except for large particles that are comparable in size with the gap between the rings, nipping is also a contributory breakage mechanism.

Structural Analysis and Optimization of Mechanical Excavator WK-20 Bucket Based on Discrete Element Method

2014 ◽  
Vol 563 ◽  
pp. 284-287
Author(s):  
Ya Juan Hou ◽  
Ai Feng Li ◽  
Su He Gao ◽  
Guo Qiang Wang
Keyword(s):  
Structural Analysis ◽  
Discrete Element Method ◽  
Simulation Model ◽  
Theoretical Basis ◽  
Reliable Method ◽  
Structural Characteristics ◽  
Discrete Element ◽  
Simulation And Optimization ◽  
Filling Coefficient ◽  
Element Method

The structural characteristics and requirements of a bucket, combined with the working experience of an excavator, were analyzed to optimize the structure of a WK-20 bucket. The simulation model was defined by the discrete element method (DEM) to characterize the real interaction between the bucket and different materials. Through an analysis and comparison of the performance of the original and optimized buckets, the latter increased the filling coefficient for different materials. The simulation and optimization based on DEM offered the theoretical basis and a reliable method for the reasonable design of the bucket structure and the entire machine.

scholarly journals Approximation of mechanical properties of sintered materials with discrete element method

2017 ◽  
Vol 140 ◽  
pp. 15022
Author(s):  
Maksym Dosta ◽  
Robert Besler ◽  
Christian Ziehdorn ◽  
Rolf Janßen ◽  
Stefan Heinrich
Keyword(s):  
Mechanical Properties ◽  
Discrete Element Method ◽  
Discrete Element ◽  
Sintered Materials ◽  
Element Method
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