Essays about: "discrete element modelling"

Showing result 1 - 5 of 9 essays containing the words discrete element modelling.

1. 1. Rock Wedge Stability Assessment : A Comparative Analysis of Limit Equilibrium and Discrete Element Methods

   University essay from Luleå tekniska universitet/Institutionen för samhällsbyggnad och naturresurser

   Author : Vilma Nordh; [2024]
   Keywords : Numerical modelling; wedge stability; 3DEC; UnWedge;

   Abstract : Rock wedge stability is a common concern in underground excavations. Since the wedge stability influences the support design, it is important to use a wedge stability analysis method that can capture factors like excavation geometry, joint parameters and properties, rock mass properties, rock cover, and stress field as accurately as possible. READ MORE

3. 2. Evaluation of load distribution on ballasted reinforced concrete railway trough bridges

   University essay from Luleå tekniska universitet/Byggkonstruktion och brand

   Author : Alex Eriksson; [2023]
   Keywords : Concrete; numerical analysis; trough bridge; railway bridge; finite element model; discrete element method; Betong; numeriskanalys; trågbro; tågbro; finita elementmetoden; diskreta elementmetoden;

   Abstract : A significant portion of the reinforced concrete railway bridges in Sweden are reaching their designed lifespan and are scheduled to be demolished and replaced in the upcoming years. To limit the econom-icand environmental impact related to the replacement of existing railway infrastructure, a comprehen-siveevaluation of their capacity is required with the aim of extending its lifespan. READ MORE

4. 3. An Investigation of the breakage process of particles : With help of experimental results and discrete element methods

   University essay from Luleå tekniska universitet/Institutionen för samhällsbyggnad och naturresurser

   Author : Ronni Bashiry; [2021]
   Keywords : Geotechnical Engineering; Breakage; Fracture; Spherical particles; DEM; Modelling; Numerical modelling;

   Abstract : In this study the breakage mechanics of brittle glass marbles was investigated. The pro-cess was to firstly investigate them in laboratory environment. The marbles or specimens was loaded until a crushing breakage occurred in a single point load test called Single Sphere Point load test in this document. READ MORE

5. 4. Numerical modelling for characterization of the granular flows impact on the gas flow in a packed-bed-reactor

   University essay from Luleå tekniska universitet/Institutionen för teknikvetenskap och matematik

   Author : Anton Sundström; [2020]
   Keywords : DEM; Discrete element method;

   Abstract : The goal of the project was to characterize the granular flows impact on the gas flow in a packed-bed-reactor. The study was created at Swerim as a master's thesis for Luleå University of Technology. The packed-bed-reactor geometry used in this study is a scaled down blast furnace model. READ MORE

6. 5. Terrain machine learning : A predictive method for estimating terrain model parameters using simulated sensors, vehicle and terrain

   University essay from Umeå universitet/Institutionen för fysik

   Author : Viktor Wiberg; [2018]
   Keywords : machine learning; terrain-vehicle interaction; discrete element method; multivariate statistics; terrain trafficability;

   Abstract : Predicting terrain trafficability of deformable terrain is a difficult task with applications in e.g, forestry, agriculture, exploratory missions. The currently used techniques are neither practical, efficient, nor sufficiently accurate and inadequate for certain soil types. READ MORE