Constitutive model development for granular and porous materials and modelling of particulate processes
|
|
- Beverley Moore
- 5 years ago
- Views:
Transcription
1 Constitutive model development for granular and porous materials and modelling of particulate processes Csaba Sinka Department of Engineering Mechanics of Materials Group Geophysics modelling meeting Leicester 27 May 2015
2 Area of research Relevance to geophysical modelling Discrete Element Modelling (DEM) coupled with Computational Fluid Mechanics (CFD) and Population Balance Modelling (PBM) Constitutive model development for granular and porous materials and implementation into finite element codes (FEA). Features: Large deformation with state evolution Coupled problems (stress, temperature, diffusion, fluid flow, chemical reaction) Swelling (polymers) Fracture and damage Currently main supervisor of 8 PhD projects The DEM-CFD-PBM models are used for: dense and dilute powder flow modelling in air particulate materials handling and processing relevant to volcano eruptions, avalanches and pyroclastic flows The continuum models are similar to constitutive models used in rock and soil mechanics: Cam-Clay, Mohr-Coulomb, Drucker-Prager cap Relevant to groundwater flow, oil well stimulation and reservoir modelling, coalbed methane, CO 2 sequestration, mudslides, etc. Accessed 06/06/ Accessed 06/06/2015
3 A numerical investigation into particle interactions and transformations using coupled DEM-CFD-PBM modelling PhD student: Hasan Elmsahli Computational Fluid Dynamics (CFD) OpenFOAM Discrete Element Method (DEM) LIGGGHTS Population Balance Modelling (PBM) DEM computes the particles motions and interactions CFD solver calculates the volume fraction and momentum exchange Start Transfer drag force data into DEM solver Agglomeration and particles breakage New collision and particles properties Update the state of the system PBM predicts the new particles size distribution
4 Modelling of solid-solid and air-solid interactions for particulate handling and processing PhD student: Abdulrahman Alharbi Normal contact force (KN) Normal contact force (KN) Programming DEM Start Validation of contact laws against the Hertz analytical solution Create boundary Generate particles (radius, mass, initial positions, orientations and velocities) n o Calculate external forces, incl. gravity Contact? yes Calculate contact forces F net = F 1 + F 2 + F 3 + F 4 + F F 1 = Gravity F 2 = Contact law (Hertz, JKR, DMT) F 3 = Friction force F 4 = Drag force F 5 = Other forces can be included Loop force-time curve numerical solution(matlab) analytical solution Time (µsec) force-displacment curve numerical solution( matlab) analytical solution Normal contact displacment (µm) Integrate the equation of motion to calculate the new positions, velocities and orientations (Newton's second law ) DEM analysis of spheronisation (using open source DEM software) Time increment: t = t + dt
5 Powder flow in air and vacuum PhD student: Reza Baserinia Dimensional model development for powder flow initiation and flow rate Linear shoe-die system with pressure measurement in the die Powder container Loading funnel Powder conditioning device Vacuum chamber Critical orifice diameter measurement Effect of shoe velocity and air pressure in the die on mass of powder introduced is investigated m ρ b D 2 L = c H D a v s P ρ b g 1.5 D 1.5 n Shoe Pressure transducer ports Die Punch Effect of vacuum pressure on flow rate through orifices of different size is studied m ρ b g 0.5 = c P D2.5 ρ b gd n The effect of air pressure conditions on flow initiation from an arching state is investigated. P ρ b gd = c H D n Lab scale rotary powder feeder into controlled low pressure environment Exit diameters 5, 10 and 15 mm Paddle shapes * c and n are empirical material constants
6 Constitutive model development, implementation and application to pharmaceutical tablet compaction Powder in Tablet out Rotary tablet press Tablet geometry Pressing sequence State after die fill Tablet strength Constitutive Model Temperature Finite Element Analysis of tablet compaction Solving equations: Equilibrium Compatibility Constitutive Bilayer tablets Friction Applications Tool design
7 Stress, MPa Numerical constitutive laws for powder compaction PhD student: Lida Che Primary particle properties + Packing arrangement (X-ray CT reconstruction) + Multi-particle finite element analysis (MPFEM) = Numerical constitutive law Experiment 80 MPFEM Density, kg m -3
8 Understanding densification and crack propagation in pharmaceutical tablet manufacturing PhD student: Peter Polak F w Empirical data set 1 Criterion 1 t t Criterion 3 Criterion 2 From: Shang C., Sinka I.C. and Pan J., Modelling of the break force of tablets under diametrical compression. International Journal of Pharmaceutics. Vol. 445, Issues 1 2, pp Empirical data set 2
9 Influence of contact strength between particles on the constitutive law for powder compaction PhD student: Muhanad Al-Sabbagh Particle Properties Size, Shape, Material Interaction Properties Friction, Adhesion Contact Constitutive Law Compaction Constitutive Law (Includes Explicitly the Contact Constitutive Law) Implementation into FEM Σ/P y Σm/P y Case Studies (Isostatic Compaction and Closed-die Compaction) Yield surfaces using a cohesion parameter using the Fleck model (Fleck N On the cold compaction of powders. Journal of the Mechanics and Physics of Solids 43, ) Σ deviatoric stress Σ m mean stress P Y macroscopic yield pressure
10 Swelling and disintegration of multi-component polymeric structures PhD student: Amnani Binti Shamjuddin Drug Rubbery region Glassy core region S1 S2 *S1 Glassy/Rubbery interface *S2 Polymer/Solvent interface S2 S1 S1 Swelling - controlled release drug delivery 1. Glassy hydrogel 2. Swollen hydrogel 3. Diminished 4. Drug in glassy core hydrogel region is completely dissolved This figure was adapted from Hsieh, M. H., & Faculty, E. (2012). PhD Thesis. Mathematical modelling of controlled drug release from polymer microspheres : incorporating the effects of swelling, diffusion and dissolution via moving boundary problems. Queensland University of Technology. Unswollen disintegrant particles Swollen disintegrant particles Stress concentrated area Large deformation Diffusion Reaction/degradation Disintegration - immediate release system Dry dosage form Hydrated dosage form Weakened structure Disintegrating dosage form This figure was adapted from Omidian, H., & Park, K. (2008). Swelling agents and devices in oral drug delivery. Journal of Drug Delivery Science and Technology, 18(2),
Towards an Improved Understanding of Strength and Anisotropy. of Cold Compacted Powder. A Thesis. Submitted to the Faculty.
Towards an Improved Understanding of Strength and Anisotropy of Cold Compacted Powder A Thesis Submitted to the Faculty of Drexel University by Wenhai Wang in partial fulfillment of the requirements for
More informationEnabling Technologies
Enabling Technologies Mechanical Modelling 1 Key Parameter Mineral System Exploration is reflected in scale-dependent translation A. Gradient in hydraulic potential B. Permeability C. Solubility sensitivity
More informationDiscrete Element Modelling of a Reinforced Concrete Structure
Discrete Element Modelling of a Reinforced Concrete Structure S. Hentz, L. Daudeville, F.-V. Donzé Laboratoire Sols, Solides, Structures, Domaine Universitaire, BP 38041 Grenoble Cedex 9 France sebastian.hentz@inpg.fr
More informationTable of Contents Chapter 1 Introduction to Geotechnical Engineering 1.1 Geotechnical Engineering 1.2 The Unique Nature of Soil and Rock Materials
Table of Contents Chapter 1 Introduction to Geotechnical Engineering 1.1 Geotechnical Engineering 1.2 The Unique Nature of Soil and Rock Materials 1.3 Scope of This Book 1.4 Historical Development of Geotechnical
More informationNumerical simulations for isostatic and die compaction of powder by the discrete element method
Numerical simulations for isostatic and die compaction of powder by the discrete element method J.-F. Jerier 1, B. Harthong 1, V. Richefeu 1, D. Imbault 1, F.-V. Donzé 1,1, P. Dorémus 1 a University of
More informationSimulation of Particulate Solids Processing Using Discrete Element Method Oleh Baran
Simulation of Particulate Solids Processing Using Discrete Element Method Oleh Baran Outline DEM overview DEM capabilities in STAR-CCM+ Particle types and injectors Contact physics Coupling to fluid flow
More informationEDEM-Easy5/ADAMS Co-simulation of Particle-Structure Interaction Dr John Favier DEM Solutions Ltd
EDEM-Easy5/ADAMS Co-simulation of Particle-Structure Interaction Dr John Favier DEM Solutions Ltd MSC.Software VPD Conference 2007 1 1 Outline DEM Solutions profile Why use Discrete Element Modelling (DEM)?
More informationMSc. Thesis Project. Simulation of a Rotary Kiln. MSc. Cand.: Miguel A. Romero Advisor: Dr. Domenico Lahaye. Challenge the future
MSc. Thesis Project Simulation of a Rotary Kiln MSc. Cand.: Miguel A. Romero Advisor: Dr. Domenico Lahaye 1 Problem Description What is a Rotary Kiln? A Rotary Kiln is a pyroprocessing device used to raise
More informationNumerical constitutive laws for powder compaction using particle properties and packing arrangement
Numerical constitutive laws for powder compaction using particle properties and packing arrangement Thesis submitted for the degree of Doctor of Philosophy at the University of Leicester by Lida Che Department
More informationFlow of Fine and Cohesive Powders under Controlled Air Pressure Conditions
Flow of Fine and Cohesive Powders under Controlled Air Pressure Conditions By Reza Baserinia Department of Engineering, University of Leicester, UK Submitted for the degree of Doctor of Philosophy at the
More informationBifurcation Analysis in Geomechanics
Bifurcation Analysis in Geomechanics I. VARDOULAKIS Department of Engineering Science National Technical University of Athens Greece and J. SULEM Centre d'enseignement et de Recherche en Mecanique des
More informationEffect Of The In-Situ Stress Field On Casing Failure *
Effect Of The In-Situ Stress Field On Casing Failure * Tang Bo Southwest Petroleum Institute, People's Republic of China Lian Zhanghua Southwest Petroleum Institute, People's Republic of China Abstract
More informationMaterial Behavior of Spherical Elastic-Plastic Granules under Diametrical Compression
Material Behavior of Spherical Elastic-Plastic Granules under Diametrical Compression Alexander Russell 1, Peter Müller 1 and Jürgen Tomas 1 1 Mechanical Process Engineering, Otto von Guericke University,
More informationNumerical modeling of standard rock mechanics laboratory tests using a finite/discrete element approach
Numerical modeling of standard rock mechanics laboratory tests using a finite/discrete element approach S. Stefanizzi GEODATA SpA, Turin, Italy G. Barla Department of Structural and Geotechnical Engineering,
More informationOutline. Advances in STAR-CCM+ DEM models for simulating deformation, breakage, and flow of solids
Advances in STAR-CCM+ DEM models for simulating deformation, breakage, and flow of solids Oleh Baran Outline Overview of DEM in STAR-CCM+ Recent DEM capabilities Parallel Bonds in STAR-CCM+ Constant Rate
More informationPrediction Quality Attributes For Mixtures From Single Component Data
Prediction Quality Attributes For Mixtures From Single Component Data John Strong, PhD Sean Garner, PhD Global Pharmaceutical Sciences AbbVie, North Chicago, IL CPDG Sep 27th, 2016 AbbVie: Our reach is
More informationTC211 Workshop CALIBRATION OF RIGID INCLUSION PARAMETERS BASED ON. Jérôme Racinais. September 15, 2015 PRESSUMETER TEST RESULTS
Jérôme Racinais September 15, 215 TC211 Workshop CALIBRATION OF RIGID INCLUSION PARAMETERS BASED ON PRESSUMETER TEST RESULTS Table of contents 1. Reminder about pressuremeter tests 2. General behaviour
More information19 th ICSMGE - Seoul 2017 EGEL. Geo-Education. J. Carlos Santamarina KAUST
19 th ICSMGE - Seoul 2017 EGEL Geo-Education J. Carlos Santamarina KAUST Basic Observations Past 100 years of Geotechnical Engineering Explosion in knowledge... very broad Computer tools & readily available
More informationA Constitutive Framework for the Numerical Analysis of Organic Soils and Directionally Dependent Materials
Dublin, October 2010 A Constitutive Framework for the Numerical Analysis of Organic Soils and Directionally Dependent Materials FracMan Technology Group Dr Mark Cottrell Presentation Outline Some Physical
More informationApplication of Discrete Element Method to Study Mechanical Behaviors of Ceramic Breeder Pebble Beds. Zhiyong An, Alice Ying, and Mohamed Abdou UCLA
Application of Discrete Element Method to Study Mechanical Behaviors of Ceramic Breeder Pebble Beds Zhiyong An, Alice Ying, and Mohamed Abdou UCLA Presented at CBBI-4 Petten, The Netherlands September
More informationA Digital Design Approach to Prediction of Powder Flowability
A Digital Design Approach to Prediction of Powder Flowability James Elliott, Xizhong Chen ( 陈锡忠 ) and Chunlei Pei ( 裴春雷 ) Macromolecular Materials Laboratory University of Cambridge ADDoPT Work Package
More informationChapter 6 Pneumatic Transport
Chapter 6 Pneumatic Transport 6.1 Pneumatic Transport Use of a gas to transport a particulate solid through pipeline Powder Rotary valve Blower Three major variables for pneumatic conveying - solid mass
More informationChapter (12) Instructor : Dr. Jehad Hamad
Chapter (12) Instructor : Dr. Jehad Hamad 2017-2016 Chapter Outlines Shear strength in soils Direct shear test Unconfined Compression Test Tri-axial Test Shear Strength The strength of a material is the
More informationMODELING GEOMATERIALS ACROSS SCALES
MODELING GEOMATERIALS ACROSS SCALES JOSÉ E. ANDRADE DEPARTMENT OF CIVIL AND ENVIRONMENTAL ENGINEERING AFOSR WORKSHOP ON PARTICULATE MECHANICS JANUARY 2008 COLLABORATORS: DR XUXIN TU AND MR KIRK ELLISON
More information8.1. What is meant by the shear strength of soils? Solution 8.1 Shear strength of a soil is its internal resistance to shearing stresses.
8.1. What is meant by the shear strength of soils? Solution 8.1 Shear strength of a soil is its internal resistance to shearing stresses. 8.2. Some soils show a peak shear strength. Why and what type(s)
More informationPrediction of Minimum Fluidisation Velocity Using a CFD-PBM Coupled Model in an Industrial Gas Phase Polymerisation Reactor
Journal of Engineering Science, Vol. 10, 95 105, 2014 Prediction of Minimum Fluidisation Velocity Using a CFD-PBM Coupled Model in an Industrial Gas Phase Polymerisation Reactor Vahid Akbari and Mohd.
More informationThe Influence of Contact Friction on the Breakage Behavior of Brittle Granular Materials using DEM
The Influence of Contact Friction on the Breakage Behavior of Brittle Granular Materials using DEM *Yi-Ming Liu 1) and Hua-Bei Liu 2) 1), 2) School of Civil Engineering and Mechanics, Huazhong University
More informationThe Mechanical Model and the Mechanism of Rock Breaking of Ridge Cutter
International Core Journal of Engineering Vol.3 No.7 07 ISSN: 44-895 The Mechanical Model and the Mechanism of Rock Breaking of Ridge Cutter Chengsen Yan, Min Lin and Zongliang Xie Southwest Petroleum
More informationJihoon Kim, George J. Moridis, John Edmiston, Evan S. Um, Ernest Majer. Earth Sciences Division, Lawrence Berkeley National Laboratory 24 Mar.
TOUGH+ROCMECH for the Analysis of coupled Flow, Thermal, Geomechanical and Geophysical Processes Code Description and Applications to Tight/Shale Gas Problems Jihoon Kim, George J. Moridis, John Edmiston,
More informationEPSRC Centre for Doctoral Training in Industrially Focused Mathematical Modelling
EPSRC Centre for Doctoral Training in Industrially Focused Mathematical Modelling Penetration of a liquid agent into a polymer Valentin Sulzer Contents 1. Introduction... 2 Background... 2 Modelling approach...
More information1.8 Unconfined Compression Test
1-49 1.8 Unconfined Compression Test - It gives a quick and simple measurement of the undrained strength of cohesive, undisturbed soil specimens. 1) Testing method i) Trimming a sample. Length-diameter
More informationModelling the mechanical behaviour of metal powder during Die compaction process
G. Cricrì et alii, Frattura ed Integrità Strutturale, 37 (06) 333-34; DOI: 0.3/IGF-ESIS.37.44 Modelling the mechanical behaviour of metal powder during Die compaction process G. Cricrì, M. Perrella University
More informationIMPERIAL COLLEGE LONDON. Department of Earth Science and Engineering. Centre for Petroleum Studies
IMPERIAL COLLEGE LONDON Department of Earth Science and Engineering Centre for Petroleum Studies A VGeST numerical investigation of stress heterogeneity in fractured rock masses By Jing. Zheng A report
More informationReservoir Simulator Compaction Modelling: A Predictor for Accelerated Coupled Rock Mechanics -- Reservoir Simulation
Reservoir Simulator Compaction Modelling: A Predictor for Accelerated Coupled Rock Mechanics -- Reservoir Simulation by Øystein Pettersen Centre for Integrated Petroleum Research, Bergen, Norway ECMOR
More informationMechanics of Earthquakes and Faulting
Mechanics of Earthquakes and Faulting www.geosc.psu.edu/courses/geosc508 Surface and body forces Tensors, Mohr circles. Theoretical strength of materials Defects Stress concentrations Griffith failure
More informationLimit analysis of brick masonry shear walls with openings under later loads by rigid block modeling
Limit analysis of brick masonry shear walls with openings under later loads by rigid block modeling F. Portioli, L. Cascini, R. Landolfo University of Naples Federico II, Italy P. Foraboschi IUAV University,
More informationMODELING GEOMATERIALS ACROSS SCALES JOSÉ E. ANDRADE DEPARTMENT OF CIVIL AND ENVIRONMENTAL ENGINEERING EPS SEMINAR SERIES MARCH 2008
MODELING GEOMATERIALS ACROSS SCALES JOSÉ E. ANDRADE DEPARTMENT OF CIVIL AND ENVIRONMENTAL ENGINEERING EPS SEMINAR SERIES MARCH 2008 COLLABORATORS: DR XUXIN TU AND MR KIRK ELLISON THE ROADMAP MOTIVATION
More informationSOIL SHEAR STRENGTH. Prepared by: Dr. Hetty Muhammad Azril Fauziah Kassim Norafida
SOIL SHEAR STRENGTH Prepared by: Dr. Hetty Muhammad Azril Fauziah Kassim Norafida What is shear strength Shear strength of a soil is the maximum internal resistance to applied shearing forces Why it is
More informationDispersed Multiphase Flow Modeling using Lagrange Particle Tracking Methods Dr. Markus Braun Ansys Germany GmbH
Dispersed Multiphase Flow Modeling using Lagrange Particle Tracking Methods Dr. Markus Braun Ansys Germany GmbH 2011 ANSYS, Inc., Markus Braun 1 Overview The Euler/Lagrange concept Breaking the barrier
More informationTerra-Mechanical Simulation Using Distinct Element Method
Shinya Kanou Masaharu Amano Yuji Terasaka Norihisa Matsumoto Tatsuo Wada To our company that designs and manufactures equipment for handling soil and rock, analyzing the interaction or contact between
More informationNUMERICAL ANALYSIS OF A PILE SUBJECTED TO LATERAL LOADS
IGC 009, Guntur, INDIA NUMERICAL ANALYSIS OF A PILE SUBJECTED TO LATERAL LOADS Mohammed Younus Ahmed Graduate Student, Earthquake Engineering Research Center, IIIT Hyderabad, Gachibowli, Hyderabad 3, India.
More informationDrained Against Undrained Behaviour of Sand
Archives of Hydro-Engineering and Environmental Mechanics Vol. 54 (2007), No. 3, pp. 207 222 IBW PAN, ISSN 1231 3726 Drained Against Undrained Behaviour of Sand Andrzej Sawicki, Waldemar Świdziński Institute
More informationLiquefaction - principles
Liquefaction - principles Consider a box of dry sand, subjected to cycles of shear strain. On initial loading, sand usually compacts and then dilates. On unloading, the sand follows a similar path to loading,
More informationDouble punch test for tensile strength of concrete, Sept (70-18) PB224770/AS (NTIS)
Lehigh University Lehigh Preserve Fritz Laboratory Reports Civil and Environmental Engineering 1969 Double punch test for tensile strength of concrete, Sept. 1969 (70-18) PB224770/AS (NTIS) W. F. Chen
More informationInfluence of forced material in roller compactor parameters I.
1 Portál pre odborné publikovanie ISSN 1338-0087 Influence of forced material in roller compactor parameters I. Krok Alexander Elektrotechnika, Strojárstvo 24.08.2009 In the chemical, pharmaceutical and
More informationRock Failure. Topics. Compressive Strength Rock Strength from Logs Polyaxial Strength Criteria Anisotropic Rock Strength Tensile Strength
Rock Failure Topics Compressive Strength Rock Strength from Logs Polyaxial Strength Criteria Anisotropic Rock Strength Tensile Strength Key Points 1. When rock fails in compression, the compressive stress
More informationChapter 6 Pneumatic Transport and Standpipes
Chapter 6 Pneumatic Transport and Standpipes 6.1 Pneumatic Transport Use of a gas to transport a particulate solid through pipeline Powder Rotary valve Blower Three major variables for pneumatic conveying
More informationSTUDY OF MICRO-SIZED PARTICLE DEPOSITION USING DEM, CFD-DEM AND SPH APPROACH
STUDY OF MICRO-SIZED PARTICLE DEPOSITION USING DEM, CFD-DEM AND SPH APPROACH A Thesis Presented to the Faculty of the Graduate School University of Missouri-Columbia In Partial Fulfillment of the Requirement
More informationDynamic Force Measurements in Preformulation of Solid Dosage Forms
University of Szeged Faculty of Pharmacy Department of Pharmaceutical Technology Summary of PhD Thesis Dynamic Force Measurements in Preformulation of Solid Dosage Forms By András Kelemen Supervisor: Prof.
More informationTectonics. Lecture 12 Earthquake Faulting GNH7/GG09/GEOL4002 EARTHQUAKE SEISMOLOGY AND EARTHQUAKE HAZARD
Tectonics Lecture 12 Earthquake Faulting Plane strain 3 Strain occurs only in a plane. In the third direction strain is zero. 1 ε 2 = 0 3 2 Assumption of plane strain for faulting e.g., reverse fault:
More informationINL Capabilities and Approach to CO 2 Sequestration. 4 th U.S.-China CO2 Emissions Control Science & Technology Symposium
www.inl.gov INL Capabilities and Approach to CO 2 Sequestration 4 th U.S.-China CO2 Emissions Control Science & Technology Symposium Travis McLing, Ph.D. Energy Resources Recovery and Sustainability September
More informationTraction Prediction of a Smooth Rigid Wheel in Soil Using Coupled Eulerian-Lagrangian Analysis
Traction Prediction of a Smooth Rigid Wheel in Soil Using Coupled Eulerian-Lagrangian Analysis Anoop Varghese 1, John Turner 1, Thomas Way 2, Clarence Johnson 3, Hans Dorfi 1 1 Bridgestone Americas Tire
More informationDYNAMIC ANALYSIS OF PILES IN SAND BASED ON SOIL-PILE INTERACTION
October 1-17,, Beijing, China DYNAMIC ANALYSIS OF PILES IN SAND BASED ON SOIL-PILE INTERACTION Mohammad M. Ahmadi 1 and Mahdi Ehsani 1 Assistant Professor, Dept. of Civil Engineering, Geotechnical Group,
More informationSimulation of the cutting action of a single PDC cutter using DEM
Petroleum and Mineral Resources 143 Simulation of the cutting action of a single PDC cutter using DEM B. Joodi, M. Sarmadivaleh, V. Rasouli & A. Nabipour Department of Petroleum Engineering, Curtin University,
More informationTable of Contents. Foreword... xiii Introduction... xv
Foreword.... xiii Introduction.... xv Chapter 1. Controllability of Geotechnical Tests and their Relationship to the Instability of Soils... 1 Roberto NOVA 1.1. Introduction... 1 1.2. Load control... 2
More informationEarthquake and Volcano Deformation
Earthquake and Volcano Deformation Paul Segall Stanford University Draft Copy September, 2005 Last Updated Sept, 2008 COPYRIGHT NOTICE: To be published by Princeton University Press and copyrighted, c
More informationProceedings oh the 18th IAHR International Symposium on Ice (2006) DISCRETE ELEMENT SIMULATION OF ICE PILE-UP AGAINST AN INCLINED STRUCTURE
DISCRETE ELEMENT SIMULATION OF ICE PILE-UP AGAINST AN INCLINED STRUCTURE Jani Paavilainen, Jukka Tuhkuri and Arttu Polojärvi Helsinki University of Technology, Laboratory for Mechanics of Materials, Finland
More informationIntegrating Lab and Numerical Experiments to Investigate Fractured Rock
Integrating Lab and Numerical Experiments to Investigate Fractured Rock Bradford H. Hager Director, Earth Resources Laboratory and Cecil and Ida Green Professor Department of Earth, Atmospheric and Planetary
More informationEnergy absorption during impact of wet particles in the fluidized bed: experiment and DEM simulation Sergiy Antonyuk
Energy absorption during impact of wet particles in the fluidized bed: experiment and DEM simulation Sergiy Antonyuk Institute of Solids Process Engineering and Particle Technology Hamburg University of
More informationC C C C 2 C 2 C 2 C + u + v + (w + w P ) = D t x y z X. (1a) y 2 + D Z. z 2
This chapter provides an introduction to the transport of particles that are either more dense (e.g. mineral sediment) or less dense (e.g. bubbles) than the fluid. A method of estimating the settling velocity
More informationFVM for Fluid-Structure Interaction with Large Structural Displacements
FVM for Fluid-Structure Interaction with Large Structural Displacements Željko Tuković and Hrvoje Jasak Zeljko.Tukovic@fsb.hr, h.jasak@wikki.co.uk Faculty of Mechanical Engineering and Naval Architecture
More informationAPPLICATION OF COMPACTION EQUATIONS FOR POWDERED PHARMACEUTICAL MATERIALS
APPLICATION OF COMPACTION EQUATIONS FOR POWDERED PHARMACEUTICAL MATERIALS Maroš ECKERT, Peter PECIAR, Alexander KROK,2, Roman FEKETE Institute of Process Engineering, Faculty of Mechanical Engineering,
More informationPavement Design Where are We? By Dr. Mofreh F. Saleh
Pavement Design Where are We? By Dr. Mofreh F. Saleh Pavement Design Where are We?? State-of-Practice State-of-the-Art Empirical Mechanistic- Empirical Mechanistic Actual Current Practice?? Inputs Structure
More informationSettlement and Bearing Capacity of a Strip Footing. Nonlinear Analyses
Settlement and Bearing Capacity of a Strip Footing Nonlinear Analyses Outline 1 Description 2 Nonlinear Drained Analysis 2.1 Overview 2.2 Properties 2.3 Loads 2.4 Analysis Commands 2.5 Results 3 Nonlinear
More informationGeology 229 Engineering Geology. Lecture 5. Engineering Properties of Rocks (West, Ch. 6)
Geology 229 Engineering Geology Lecture 5 Engineering Properties of Rocks (West, Ch. 6) Common mechanic properties: Density; Elastic properties: - elastic modulii Outline of this Lecture 1. Uniaxial rock
More informationSPE FreezeFrac Improves the Productivity of Gas Shales
SPE 166482 FreezeFrac Improves the Productivity of Gas Shales S. Enayatpour, E. Van Oort, T. Patzek, University of Texas At Austin Copyright 2013, Society of Petroleum Engineers. This paper was prepared
More informationThis is the accepted version of a paper presented at 2014 IEEE Electrical Insulation Conference (EIC).
http://www.diva-portal.org Postprint This is the accepted version of a paper presented at 2014 IEEE Electrical Insulation Conference (EIC). Citation for the original published paper: Girlanda, O., Tjahjanto,
More informationA DISCRETE ELEMENT METHODOLOGY FOR THE ANALYSIS OF COHESIVE GRANULAR BULK SOLID MATERIALS. Liz Ivoneth Del Cid
A DISCRETE ELEMENT METHODOLOGY FOR THE ANALYSIS OF COHESIVE GRANULAR BULK SOLID MATERIALS by Liz Ivoneth Del Cid c Copyright by Liz Ivoneth Del Cid, 2015 All Rights Reserved A thesis submitted to the Faculty
More informationDevelopment and application of time-lapse ultrasonic tomography for laboratory characterisation of localised deformation in hard soils / soft rocks
Development and application of time-lapse ultrasonic tomography for laboratory characterisation of localised deformation in hard soils / soft rocks Erika Tudisco Research Group: Stephen A. Hall Philippe
More informationGeology 2112 Principles and Applications of Geophysical Methods WEEK 1. Lecture Notes Week 1
Lecture Notes Week 1 A Review of the basic properties and mechanics of materials Suggested Reading: Relevant sections from any basic physics or engineering text. Objectives: Review some basic properties
More informationSoil strength. the strength depends on the applied stress. water pressures are required
Soil Strength Soil strength u Soils are essentially frictional materials the strength depends on the applied stress u Strength is controlled by effective stresses water pressures are required u Soil strength
More informationSTUDY OF DYNAMIC SOIL-STRUCTURE INTERACTION OF CONCRETE GRAVITY DAMS
STUDY OF DYNAMIC SOIL-STRUCTURE INTERACTION OF CONCRETE GRAVITY DAMS Djamel OUZANDJA 1, Fatiha BENKECHIDA 2, Toufiq OUZANDJA 3, Hamza BELHADED 4 ABSTRACT The safety evaluation of the dams subjected to
More informationCalculation and analysis of internal force of piles excavation supporting. based on differential equation. Wei Wang
International Conference on Energy and Environmental Protection (ICEEP 016) Calculation and analysis of internal force of piles excavation supporting based on differential equation Wei Wang School of Prospecting
More informationDry granular flows: gas, liquid or solid?
Dry granular flows: gas, liquid or solid? Figure 1: Forterre & Pouliquen, Annu. Rev. Fluid Mechanics, 2008 1 Characterizing size and size distribution Grains are not uniform (size, shape, ) Statistical
More informationCh 4a Stress, Strain and Shearing
Ch. 4a - Stress, Strain, Shearing Page 1 Ch 4a Stress, Strain and Shearing Reading Assignment Ch. 4a Lecture Notes Sections 4.1-4.3 (Salgado) Other Materials Handout 4 Homework Assignment 3 Problems 4-13,
More informationHydraulic fracturing in unconventional shale gas reservoirs. Dr.-Ing. Johannes Will, Dynardo GmbH, Weimar, Germany
Hydraulic fracturing in unconventional shale gas reservoirs Dr.-Ing. Johannes Will, Dynardo GmbH, Weimar, Germany Founded: 2001 (Will, Bucher, CADFEM International) More than 35 employees, offices at Weimar
More information(Refer Slide Time: 02:18)
Geology and Soil Mechanics Prof. P. Ghosh Department of Civil Engineering Indian Institute of Technology Kanpur Lecture 40 Shear Strength of Soil - C Keywords: Shear strength of soil, direct shear test,
More informationFinite Element Solutions for Geotechnical Engineering
Release Notes Release Date: January, 2016 Product Ver.: GTSNX 2016 (v1.1) Integrated Solver Optimized for the next generation 64-bit platform Finite Element Solutions for Geotechnical Engineering Enhancements
More informationMathematical Modeling and Simulation of Drug Release from Microparticles
Mathematical Modeling and Simulation of Drug Release from Microparticles Qin H. 1 and Wang C.H. 2 Department of Chemical and Biomolecular Engineering, National University of Singapore, 4 Engineering Drive
More informationSTRAIN LOCALIZATION AS BIFURCATION ELASTO-PLASTIC SOFTENING MATERIALS
Fracture Mechanics of Concrete Structures, Proceedings FRAMCOS-2, edited by Folker H. Wittmann, AEDIFICA TIO Publishers, D-79104 Frei burg (1995) STRAIN LOCALIZATION AS BIFURCATION ELASTO-PLASTIC SOFTENING
More informationMicro-scale modelling of internally
Micro-scale modelling of internally unstable soils Dr Tom Shire School of Engineering, University of Glasgow 1 st September 2017 Outline Internal instability Micro-scale modelling Hydromechanical criteria
More informationNew Developments Of Cutting Theories With Respect To Offshore Applications
Miedema, S.A., ew developments of cutting theories with respect to offshore applications, the cutting of sand, clay and rock. ISOPE 010, Beijing China, June 010. ew Developments Of Cutting Theories With
More informationPowder Technology 205 (2011) Contents lists available at ScienceDirect. Powder Technology. journal homepage:
Powder Technology 25 (211) 15 29 Contents lists available at ScienceDirect Powder Technology journal homepage: www.elsevier.com/locate/powtec Numerical simulation of particle breakage of angular particles
More informationOedometer and direct shear tests to the study of sands with various viscosity pore fluids
3 r d International Conference on New Developments in Soil Mechanics and Geotechnical Engineering, Oedometer and direct shear tests to the study of sands with various viscosity pore fluids Rozhgar Abdullah
More informationTheory of Shear Strength
MAJ 1013 ADVANCED SOIL MECHANICS Theory of Shear Strength Prepared by, Dr. Hetty 1 Strength of different materials Steel Concrete Soil Tensile strength Compressive strength Shear strength Complex behavior
More informationSOIL MODELS: SAFETY FACTORS AND SETTLEMENTS
PERIODICA POLYTECHNICA SER. CIV. ENG. VOL. 48, NO. 1 2, PP. 53 63 (2004) SOIL MODELS: SAFETY FACTORS AND SETTLEMENTS Gabriella VARGA and Zoltán CZAP Geotechnical Department Budapest University of Technology
More informationGG 454 March 19, EFFECTIVE STRESS AND MOHR-COULOMB FAILURE (26)
GG 454 March 19, 2002 1 EFFECTIVE STRESS AND MOHR-COULOMB FAILURE (26) I Main Topics A Driving and resisting stresses at the base of an inclined block B Factor of safety C Effective stress D Mohr-Coulomb
More informationThe Stress Variations of Granular Samples in Direct Shear Tests using Discrete Element Method
The Stress Variations of Granular Samples in Direct Shear Tests using Discrete Element Method Hoang Khanh Le 1), *Wen-Chao Huang 2), Yi-De Zeng 3), Jheng-Yu Hsieh 4) and Kun-Che Li 5) 1), 2), 3), 4), 5)
More informationAdvanced model for soft soils. Modified Cam-Clay (MCC)
Advanced model for soft soils. Modified Cam-Clay (MCC) c ZACE Services Ltd August 2011 1 / 62 2 / 62 MCC: Yield surface F (σ,p c ) = q 2 + M 2 c r 2 (θ) p (p p c ) = 0 Compression meridian Θ = +π/6 -σ
More informationDiscrete Element Study of Aggregate Damage during Asphalt Compaction
0 0 0 0 Discrete Element Study of Aggregate Damage during Asphalt Compaction Erik Olsson, Denis Jelagin, Manfred Partl ( KTH Royal Institute of Technology, Department of Civil and Architectural Engineering,
More informationThe Effect of Side Constraint in Rolling Compaction of Powders
The Effect of Side Constraint in Rolling Compaction of Powders Wenhai Wang 1, John C. Cunningham 2, and Antonios Zavaliangos 1 1 Drexel University, Department of Materials Science and Engineering, Philadelphia,
More informationSetting Attainable and Practical Particle Size Specifications
Setting Attainable and Practical Particle Size Specifications Mark Bumiller HORIBA Scientific mark.bumiller@horiba.com Why Set Specifications? Product release (quality) Communicate grade to buyers Internal
More informationChapter 5 Shear Strength of Soil
Page 5 Chapter 5 Shear Strength of Soil. The internal resistance per unit area that the soil mass can offer to resist failure and sliding along any plane inside it is called (a) strength (b) shear strength
More informationMaterial is perfectly elastic until it undergoes brittle fracture when applied stress reaches σ f
Material is perfectly elastic until it undergoes brittle fracture when applied stress reaches σ f Material undergoes plastic deformation when stress exceeds yield stress σ 0 Permanent strain results from
More informationNumerical Modeling of Direct Shear Tests on Sandy Clay
Numerical Modeling of Direct Shear Tests on Sandy Clay R. Ziaie Moayed, S. Tamassoki, and E. Izadi Abstract Investigation of sandy clay behavior is important since urban development demands mean that sandy
More informationIntro to Soil Mechanics: the what, why & how. José E. Andrade, Caltech
Intro to Soil Mechanics: the what, why & how José E. Andrade, Caltech The What? What is Soil Mechanics? erdbaumechanik The application of the laws of mechanics (physics) to soils as engineering materials
More informationStudy of Pile Interval of Landslide Restraint Piles by Centrifuge Test and FEM Analysis
Disaster Mitigation of Debris Flows, Slope Failures and Landslides 113 Study of Pile Interval of Landslide Restraint Piles by Centrifuge Test and FEM Analysis Yasuo Ishii, 1) Hisashi Tanaka, 1) Kazunori
More informationCFD Investigations of Effects of Cohesive Particles Proportion on Fluidization of Binary Particles
Proceedings of the 2 nd World Congress on Momentum, Heat and Mass Transfer (MHMT 17) Barcelona, Spain April 6 8, 2017 Paper No. ICMFHT 122 ISSN: 2371-5316 DOI: 10.11159/icmfht17.122 CFD Investigations
More informationPractical Pharmaceutical Technology I USP Dissolution Method for PARACETAMOL 500 mg Tablets Section No. 6 Group D
University of Jordan Faculty of Pharmacy Practical Pharmaceutical Technology I USP Dissolution Method for PARACETAMOL 500 mg Tablets Section No. 6 Group D USP Dissolution Method for PARACETAMOL 500 mg
More informationMicromechanics of granular materials: slow flows
Micromechanics of granular materials: slow flows Niels P. Kruyt Department of Mechanical Engineering, University of Twente, n.p.kruyt@utwente.nl www.ts.ctw.utwente.nl/kruyt/ 1 Applications of granular
More information