Search for Articles:
Title / Keyword
Author / Affiliation / Email
Journal
Article Type
 
 
Advanced Search
 
Section
Special Issue
Volume
Issue
Number
Page
 
5.2
3.4
Journals
Materials
Special Issues
Discrete Element Modeling of Materials
materials-logo
Submit to Materials Review for Materials Propose a Special Issue

Journal Menu

► Journal Menu

Journal Browser

► Journal Browser
share announcement

Discrete Element Modeling of Materials

A special issue of Materials (ISSN 1996-1944).

Deadline for manuscript submissions: closed (15 October 2020) | Viewed by 8386

Special Issue Editors

Prof. Dr. Jerzy Rojek

E-Mail Website
Guest Editor
Department of Information and Computational Science, Institute of Fundamental Technological Research, Polish Academy of Sciences, 02-106 Warszawa, Poland
Interests: materials modeling; explicit finite element method; discrete element method; nonlinear computational mechanics; wear and contact phenomena; mechanical behavior and fatigue
Dr. Szymon Nosewicz

E-Mail Website
Guest Editor
Department of Information and Computational Science, Institute of Fundamental Technological Research, Polish Academy of Sciences, Warsaw, Poland
Interests: numerical modeling in materials science; modeling of composites and multiphase materials; powder metallurgy; multiscale analysis; experimental validation of numerical methods
Special Issues, Collections and Topics in MDPI journals

Special Issue Information

Dear Colleagues,

This Special Issue is aimed at gathering and presenting the latest developments in materials modeling with the discrete element method (DEM). Applications of the DEM to modelling various materials—natural and man-made—such as soils, rocks, powders, concrete, ceramics, and others, particulate and non-particulate, cohesive and cohesionless, are expected. Contributions showing simulations of real problems of geomechanics, materials science, chemical engineering, metallurgy, mechanical and civil engineering, agriculture, or biomechanics, as well as developments of new models, theoretical formulations, and numerical algorithms in the discrete element method are welcome. Different approaches within the DEM can be presented. The coupling of the DEM with other methods (e.g., molecular dynamics, FEM and CFD), as well as the use of the DEM in the framework of multiscale modelling is within the scope of interest.

This Special Issue provides an excellent opportunity for those who use and develop the discrete element method to present their achievements. Research articles, review articles, and communications related to the above-mentioned topics are invited for this Special Issue.

Prof. Dr. Jerzy Rojek
Dr. Szymon Nosewicz
Guest Editors

Manuscript Submission Information

Manuscripts should be submitted online at www.mdpi.com by registering and logging in to this website. Once you are registered, click here to go to the submission form. Manuscripts can be submitted until the deadline. All submissions that pass pre-check are peer-reviewed. Accepted papers will be published continuously in the journal (as soon as accepted) and will be listed together on the special issue website. Research articles, review articles as well as short communications are invited. For planned papers, a title and short abstract (about 100 words) can be sent to the Editorial Office for announcement on this website.

Submitted manuscripts should not have been published previously, nor be under consideration for publication elsewhere (except conference proceedings papers). All manuscripts are thoroughly refereed through a single-blind peer-review process. A guide for authors and other relevant information for submission of manuscripts is available on the Instructions for Authors page. Materials is an international peer-reviewed open access semimonthly journal published by MDPI.

Please visit the Instructions for Authors page before submitting a manuscript. The Article Processing Charge (APC) for publication in this open access journal is 2600 CHF (Swiss Francs). Submitted papers should be well formatted and use good English. Authors may use MDPI's English editing service prior to publication or during author revisions.

Keywords

  • discrete element method
  • materials modelling
  • geomechanics
  • powder metallurgy
  • coupling
  • multiscale
  • simulation

Published Papers (3 papers)

Download All Papers
Order results
Result details
Show export options expand_more Show export options expand_less
Select all
Export citation of selected articles as:

Research

20 pages, 6980 KiB  
Article
Discrete Element Framework for Determination of Sintering and Postsintering Residual Stresses of Particle Reinforced Composites
by Szymon Nosewicz, Jerzy Rojek and Marcin Chmielewski
Materials 2020, 13(18), 4015; https://doi.org/10.3390/ma13184015 - 10 Sep 2020
Cited by 11 | Viewed by 1886
Abstract
In this paper, the discrete element method framework is employed to determine and analyze the stresses induced during and after the powder metallurgy process of particle-reinforced composite. Applied mechanical loading and the differences in the thermal expansion coefficients of metal/intermetallic matrix and ceramic [...] Read more.
In this paper, the discrete element method framework is employed to determine and analyze the stresses induced during and after the powder metallurgy process of particle-reinforced composite. Applied mechanical loading and the differences in the thermal expansion coefficients of metal/intermetallic matrix and ceramic reinforcing particles during cooling produce the complex state of stresses in and between the particles, leading to the occurrence of material defects, such as cracks, and in consequence the composite degradation. Therefore, the viscoelastic model of pressure-assisted sintering of a two-phase powder mixture is applied in order to study the stress field of particle assembly of intermetallic-ceramic composite NiAl/Al2O3. The stress evaluation is performed at two levels: macroscopic and microscopic. Macroscopic averaged stress is determined using the homogenization method using the representative volume element. Microscopic stresses are calculated both in the body of particles and in the contact interface (necks) between particles. Obtained results are in line with the cooling mechanism of the two-phase materials. Full article
(This article belongs to the Special Issue Discrete Element Modeling of Materials)
►▼ Show Figures

Figure 1

17 pages, 7929 KiB  
Article
Discrete Element Simulation and Validation of a Mixing Process of Granular Materials
by Jian Chen, Mikito Furuichi and Daisuke Nishiura
Materials 2020, 13(5), 1208; https://doi.org/10.3390/ma13051208 - 08 Mar 2020
Cited by 9 | Viewed by 2732
Abstract
The mixing processes of granular materials have gained wide interest among various fields of science and engineering. In this study, our focus is a mixing process for offshore mining. We conducted numerical simulations using the discrete element method (DEM) in comparison with experimental [...] Read more.
The mixing processes of granular materials have gained wide interest among various fields of science and engineering. In this study, our focus is a mixing process for offshore mining. We conducted numerical simulations using the discrete element method (DEM) in comparison with experimental works on mixing color sand. Careful calibration of initial packing densities has been performed for the simulations. For validation, the steady-state torques on the mixer head, the maximal increase of surface height after mixing, and the surface mixing patterns have been compared. The effect of particle size on the simulation results has been clarified. With the particle size approaching the actual particle size, consistent torques and mixing patterns indicate the capability of the DEM code for studying the particular mixing process, while the results for the maximal increase of surface height should be interpreted with more caution. Full article
(This article belongs to the Special Issue Discrete Element Modeling of Materials)
►▼ Show Figures

Figure 1

38 pages, 13697 KiB  
Article
DECM: A Discrete Element for Multiscale Modeling of Composite Materials Using the Cell Method
by Elena Ferretti
Materials 2020, 13(4), 880; https://doi.org/10.3390/ma13040880 - 16 Feb 2020
Cited by 8 | Viewed by 2868
Abstract
This paper presents a new numerical method for multiscale modeling of composite materials. The new numerical model, called DECM, consists of a DEM (Discrete Element Method) approach of the Cell Method (CM) and combines the main features of both the DEM and the [...] Read more.
This paper presents a new numerical method for multiscale modeling of composite materials. The new numerical model, called DECM, consists of a DEM (Discrete Element Method) approach of the Cell Method (CM) and combines the main features of both the DEM and the CM. In particular, it offers the same degree of detail as the CM, on the microscale, and manages the discrete elements individually such as the DEM—allowing finite displacements and rotations—on the macroscale. Moreover, the DECM is able to activate crack propagation until complete detachment and automatically recognizes new contacts. Unlike other DEM approaches for modeling failure mechanisms in continuous media, the DECM does not require prior knowledge of the failure position. Furthermore, the DECM solves the problems in the space domain directly. Therefore, it does not require any dynamic relaxation techniques to obtain the static solution. For the sake of example, the paper shows the results offered by the DECM for axial and shear loading of a composite two-dimensional domain with periodic round inclusions. The paper also offers some insights into how the inclusions modify the stress field in composite continua. Full article
(This article belongs to the Special Issue Discrete Element Modeling of Materials)
►▼ Show Figures

Figure 1

Show export options expand_more Show export options expand_less
Select all
Export citation of selected articles as:
 
Displaying articles 1-3
Back to TopTop