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"A discrete element study on the deformation and degradation of coal-fo" by Jing Chen, Jayan S. Vinod et al.

This paper presents the results of Discrete Element Modelling (DEM) which quantitively examine the effect of coal fouling on the deformation and degradation of ballast upon cyclic loading. The degradation model described herein considers the Weibull distribution effects in tandem with a granular medium hardening law that incorporates the maximum contact criterion to capture surface abrasion and corner breakage of angular ballast. The DEM model had been calibrated initially with laboratory data obtained from large-scale direct shear testing. Subsequently, a series of cubical shear test simulations have been carried out using DEM to understand the behaviour of fouled ballast whereby the numerical particle degradation modelling could simulate the experimental response of the ballast assembly at various fouling levels. The results show that the increased level of fouling exacerbates the sleeper settlement, while decreasing the resilient modulus and the particle breakage. Ballast beneath th ....

Discrete Element Modelling , Ballast Degradation , Discrete Element Method , Dynamic Responses , Leeper Settlement ,

"A modelling and validation approach for predicting particle concentrat" by Luke Stone, Stefan Zigan et al.

Abstract
Traditionally, when undertaking feasibility studies for designing new storage facilities such as storage silos, engineers will extract design information from experiments and evaluate potential risks associated with health and safety, suitability design for reliable material flow, and quality of products. The simulation approach applied incorporates Computational Fluid Dynamics (CFD), and Discrete Element Modelling (DEM) approaches and experimental tests will be used for validating these simulation results. One important aspect related to handling fine and dusty materials (particles smaller than 100 microns) is the associated risk of dust explosions, which needs to be evaluated before the commissioning of storage silos; to evaluate the accumulation of fines during the silo filling process, simulations and experiments were conducted. Alumina and salt were used here as reference materials for calibration and the validation purposes. The validation efforts are significan ....

Computational Fluid Dynamics , Discrete Element Modelling , Air Entrainment , Fd Dem , Materials Handling , கணக்கீட்டு திரவம் இயக்கவியல் , தனித்தனி உறுப்பு மாடலிங் ,

Jenike & Johanson Explains the Core Principles of DEM

Jenike & Johanson Explains the Core Principles of DEM
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Jenike Johanson , Discrete Element Modelling , தனித்தனி உறுப்பு மாடலிங் ,