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Yan, Y. (author), Pargalgauskas, S. (author), Helmons, R.L.J. (author), Schott, D.L. (author)A convex pattern surface is proposed and optimized to mitigate the sliding wear of bulk handling equipment caused by interaction with bulk solids. This work investigates the effectiveness of the convex pattern surface on wear reduction during interactions with non-spherical particles. Multiple representative particles, obtained through a...journal article 2024
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Roeplal, R.N. (author), Pang, Y. (author), Schott, D.L. (author)Bed permeability is a crucial factor in blast furnace performance which depends on the material distribution achieved through charging. Since a homogeneous bed of pellet and sinter is recommended, it is crucial to understand whether segregation of the pellet-sinter mixture occurs during charging. The Discrete Element Method is useful in this...journal article 2024
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Roeplal, R.N. (author), Pang, Y. (author), Adema, Allert (author), van der Stel, Jan (author), Schott, D.L. (author)Bed permeability is a crucial factor in blast furnace efficiency and stability. The Discrete Element Method (DEM) has been used extensively to model material flow in different parts of the furnace and holds great potential for optimizing the permeability. The inherent computational load is the main bottleneck in using this method to provide...review 2023
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Thornton, Anthony R. (author), Plath, Timo (author), Ostanin, Igor (author), Götz, Holger (author), Bisschop, Jan Willem (author), Hassan, Mohamed (author), Roeplal, R.N. (author), Wang, Xiuqi (author), Pourandi, Sahar (author), Weinhart, Thomas (author)In this paper we introduce the open-source code MercuryDPM: a code for simulating discrete particles. The paper discusses software and management issues that may be interesting for the developers of other open-source codes. Then we review the new features that have been added since the last publication: an improved Hertz-Mindlin model; a new...journal article 2023
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Jia, W. (author), Markine, V.L. (author), Guo, Y. (author)The railway ballast layer provides the function of bearing loading, resisting geometry degradation, and drainage. In those related research, the behaviour of ballast assembly can be obtained by laboratory (or in-situ) tests. Limited simulation methods can be used to analyse the behaviour of ballast particles at the mesoscopic level. The...journal article 2023
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Zhang, A. (author), Dieudonné, A.A.M. (author)Microbially induced carbonate precipitation (MICP) involves bacteria to drive calcite precipitation and naturally cement soils, thereby improving soils performance. Experimental studies have shown that bio-cemented specimen can suffer from severe spatial inhomogeneity of the calcite content, leading to large uncertainty in treatment...conference paper 2023
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Xing, Chao (author), Liu, Bo (author), Sun, Zhiqi (author), Tan, Yiqiu (author), Liu, X. (author), Zhou, Changhong (author)Asphalt mixture is a skeleton filling system consisting of aggregate, asphalt, and mineral powder. High performance asphalt mixture design is directly affected by internal stress transmission of skeleton filling system. In this paper, the discrete element method based on digital image was employed to study the stress transmission. By...journal article 2022
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Jia, W. (author), Markine, V.L. (author), Jing, Guoqing (author)Under the high requirement of ballast materials and the frequent maintenance of high-speed and heavy-haul railway, the maintenance cost and material consumption become an important problem. Several methods are used to increase the stability and service life of railway structure, also using recycled materials in ballast bed construction can be a...journal article 2021
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Fransen, M.P. (author), Langelaar, Matthijs (author), Schott, D.L. (author)Developments in discrete element modelling (DEM) enable detailed modelling of granular flows in bulk handling equipment (BHE) but due to the computational expense of DEM, wide use in analysing equipment performance is not yet feasible. Metamodels are a viable option to effectively use DEM in analysing BHE performance. Metamodels are able to...journal article 2021
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Guo, Y. (author), Zong, Lu (author), Markine, V.L. (author), Wang, Xinyu (author), Jing, Guoqing (author)Lateral and longitudinal resistance of ballasted track are two main indicators for the track stability quantification. Aiming at improving the lateral and longitudinal resistance, nailed sleeper is studied with single sleeper push tests (SSPTs) and discrete element modelling (DEM). The SSPTs were applied to study how much resistance the...journal article 2021
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Mohajeri, M. (author), de Kluijver, Wilbert (author), Helmons, R.L.J. (author), van Rhee, C. (author), Schott, D.L. (author)The traditional design approach of grabs and other bulk handling equipment consists of manufacturing and testing physical prototypes. A novel design approach is to use a co-simulation of MultiBody Dynamics (MBD) and Discrete Element Method (DEM), in which the virtual prototype of a new concept interacts with bulk solids. Therefore, this study...journal article 2021
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Guo, Y. (author), Ji, Yameng (author), Zhou, Qiang (author), Markine, V.L. (author), Jing, Guoqing (author)The rubber-protected ballast (RPB) is made from natural ballast particles and crumb rubber particles. The crumb rubber is shredded waste tires. RPB was chosen to replace the ballast as it has higher resistance to breakage and abrasion. However, the static and dynamic performance of the RPB has not been confirmed yet. Towards this end,...journal article 2020
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Guo, Y. (author), Fu, Hao (author), Qian, Yu (author), Markine, V.L. (author), Jing, Guoqing (author)The lateral stability of ballasted track becomes more important because of the safety requirement under the demand of higher train speed and heavier axle load. To increase the lateral resistance of ballast bed, this paper proposes three types of new sleepers, frictional sleepers. The frictional sleepers are sleepers with different shapes of...journal article 2020
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Weinhart, Thomas (author), Orefice, Luca (author), Post, Mitchel (author), van Schrojenstein Lantman, Marnix P. (author), Denissen, Irana F.C. (author), Tunuguntla, Deepak R. (author), Tsang, J. M.F. (author), de Oliveira Barbosa, J.M. (author), Shi, H. (author)We introduce the open-source package MercuryDPM, which we have been developing over the last few years. MercuryDPM is a code for discrete particle simulations. It simulates the motion of particles by applying forces and torques that stem either from external body forces, (gravity, magnetic fields, etc.) or particle interactions. The code has...journal article 2020
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Yan, Y. (author), Vreeburg, Wouter (author), Chen, Guangming (author), Schott, D.L. (author)Using bionic surface on the material equipment interface of bulk handling equipment is a promising solution for wear reduction. A bionic surface is a flat surface outfitted with a pattern of convexes that disrupt the natural sliding flow of bulk material. Previous numerical work has shown a significant reduction of wear of bionic surfaces...conference paper 2019
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Gilvari, H. (author), de Jong, W. (author), Schott, D.L. (author)The breakage behaviour of biomass pellets with a diameter of 6 mm under uniaxial compression test was studied experimentally and numerically using the discrete element method (DEM). Two types of the available bonding contact models in EDEM software were used to compare the macroscopic properties including the maximum stress at failure, strain at...conference paper 2019
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Grashof, Bernd (author), Alvarez Grima, M. (author), Schott, D.L. (author), Helmons, R.L.J. (author)Rock cutting is a challenging process. Heavy equipment, large cutting forces, high wear rates and large amounts of required energy are common challenges when cutting rock. Traditionally, rock cutting is based on a linear motion of the cutting tool. However, a significant improvement on the cutting performance is expected when using non-linear...conference paper 2019
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Lommen, S.W. (author), Lodewijks, G. (author), Schott, D.L. (author)Purpose: Bulk material-handling equipment development can be accelerated and is less expensive when testing of virtual prototypes can be adopted. However, often the complexity of the interaction between particulate material and handling equipment cannot be handled by a single computational solver. This paper aims to establish a framework for...journal article 2018
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Liu, H. (author)Digital elevation models (DEM) are widely used in various distributed hydrological models. The stream network can be extracted from it so that runoff routing can be calculated. With the advent of remote sensing and computing technologies, the computation based on DEM with high resolution becomes possible. However, there still exist regions with...conference paper 2018
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Zhou, C. (author), Liu, X. (author), Apostolidis, P. (author)Low Temperature Asphalt (LTA) technologies are utilized in asphalt pavement industry to lower energy demands and greenhouse gas emission during mixing and construction processes. Although these technologies are currently available and hope to demonstrate similar performance with Hot Mix Asphalt (HMA) mixes, LTA shows more sensitive than HMA to...conference paper 2017
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