THE AGROMECK

By EMILY THOMPSON

CONTENTS INTRODUCTION BRIEF INTRODUCTION OF DEM THE DEVELOPMENT HISTORY OF DEM BASIC THEORY OF DEM CONTACT THEORY OF DEM PARTICLE CONTACT SEARCH CALCULATION OF PARTICLE MOTION STATE DETERMINATION OF TIME STEP DEVELOPMENT TREND OF DEM DEVELOPMENT OF THEORETICAL RESEARCH IMPROVEMENT OF OPERATION EF?CIENCY MULTI-?ELD APPLICATION SOFTWARE DEVELOPMENT MULTI-ALGORITHM COUPLING ANALYSIS PARAMETER CALIBRATION OF DEM DIRECT MEASUREMENT OF THE TEST TEST-SIMULATION COMBINED CALIBRATION METHOD REFERENCES APPLICATION OF DEM IN COAL AND AGRICULTURAL MACHINERY APPLICATION OF DEM IN COAL MACHINE EQUIPMENT TRANSPORTATION MACHINERY MINING MACHINERY OTHER COAL MACHINE EQUIPMENT APPLICATION OF DEM IN AGRICULTURAL MACHINERY EQUIPMENT RIPPER LOOSE MACHINERY SEEDING MACHINERY HARVESTING MACHINERY OTHER AGRICULTURAL MACHINERY ANALYSIS OF THE COAL BULK TRANSPORT STATE BASED ON DEM EDEM SIMULATION MODEL CONSTRUCTION SCRAPER CONVEYOR MODEL COAL BULK MODEL EDEM SIMULATION ANALYSIS OF TRANSPORTATION STATE UNDER COMPLEX CONDITIONS STABLE AND START-STOP WORKING CONDITIONS MATERIAL ACCUMULATION CONDITIONS GANGUE-CONTAINING WORKING CONDITIONS BOTTOM PLATE TILTING CONDITION VISCOSITY CHANGE CONDITION OF COAL BULK DISTRIBUTION AND MOVEMENT STATE OF COAL BULK DISTRIBUTION STATE OF COAL BULK MOVEMENT STATE OF COAL BULK REFERENCE MECHANICAL EFFECT OF SCRAPER CONVEYOR BASED ON DEM EDEM SIMULATION ANALYSIS OF BULK LOAD CHARACTERISTICS RECONSTRUCTION OF SCRAPER CONVEYOR MODEL LOAD CHARACTERISTICS OF COAL BULK UNDER NORMAL WORKING CONDITIONS LOAD CHARACTERISTICS OF COAL BULK UNDER COMPLEX WORKING CONDITIONS EDEM SIMULATION ANALYSIS OF THE FORCE FEATURES OF THE MIDDLE TROUGH OF THE SCRAPER CONVEYOR UP AND DOWN HILL CONDITIONS THE MIDDLE TROUGH TILTS THE CONDITION IN THE DIRECTION OF THE PUSH DIFFERENT CAPACITY CONDITIONS LEDGE LOCAL ACCUMULATION CONDITIONS EDEM SIMULATION ANALYSIS OF CONTACT MECHANICS AND WEAR BETWEEN THE COAL BULK AND THE MIDDLE TROUGH THEORETICAL ANALYSIS OF CONTACT MECHANICS ANALYSIS OF THE WEAR MECHANISM OF THE MIDDLE TROUGH ANALYSIS OF THE WEAR LAW OF THE MIDDLE TROUGH APPLICATION OF DEM ON THE DESIGN OF WEAR-RESISTANT BIONIC CHUTE OF SCRAPER CONVEYOR GEOMETRIC STRUCTURE CHARACTERISTICS OF WEAR-RESISTANT ORGANISM SURFACE SELECTION OF BIOLOGICAL GEOMETRIC STRUCTURE SURFACE AND BIONIC MODEL PIT-SHAPED BIOLOGICAL NON-SMOOTH GEOMETRIC STRUCTURE SURFACE OPTIMIZATION OF WEAR-RESISTANT STRUCTURE OF PIT-TYPE NON-SMOOTH SURFACE TEST CONDITIONS AND METHODS BIONIC MIDDLE PLATE DESIGN AND PREPARATION OPTIMIZE TEST DESIGN EXPERIMENTAL RESULTS AND ANALYSIS VERI?CATION AND COMPARATIVE TEST OF BIONIC MIDDLE PLATE WITH OPTIMAL STRUCTURE EDEM SIMULATION ANALYSIS OF THE WEAR-RESISTANT MECHANISM OF BIONIC MIDDLE PLATE WITH OPTIMAL STRUCTURE RESEARCH ON WEAR MECHANISM BASED ON WEAR MORPHOLOGY RESEARCH ON WEAR RESISTANCE MECHANISM OF EDEM-RECURDYN COUPLED SIMULATION FLOWING STATE ANALYSIS OF COAL BULK IN SILOS USING DEM CONSTRUCTION OF DEM MODEL FOR SILO-COAL PARTICLE INTERACTION COAL PARTICLE MODEL SILO MODEL CONTACT AND FLOW MODEL SIMULATION ANALYSIS OF BULK MATERIAL FLOW STATE IN SILO BY DEM FLOW STATE SIMULATION FACTORS AFFECTING FLOW STATUS SIMULATION OF DEM FOR BULK MATERIAL FLOW IN COAL SILO UNLOADING HOPPER HOPPER DISCHARGE THEORY SIMULATION ANALYSIS OF LOADING AND UNLOADING STRESS ANALYSIS OF SILOS USING DEM SILO BOUNDARY CONDITIONS AND LOADING AND UNLOADING MATERIAL SIMULATION SIMULATION ANALYSIS OF STATIC DYNAMIC PRESSURE THE CLASSIC THEORY OF COAL BARN PRESSURE STATIC AND DYNAMIC PRESSURE ANALYSIS OVERPRESSURE DISCRETE ELEMENT SIMULATION ANALYSIS TEST VERI?CATION TEST DEVICE TEST SCHEMES ANALYSIS OF RESULTS APPLICATION OF DEM ON THE DESIGN AND PERFORMANCE ANALYSIS OF BIONIC SUBSOILER PFC3D SIMULATION MODEL BLACK BEAR CLAW MODEL SOIL PARTICLE MODEL SOIL PARAMETER CALIBRATION CALIBRATION SCHEME DESIGN IN?UENCING FACTORS AND MEASURING METHODS SOIL PARTICLE CORRECTION RESULTS ANALYSIS OF CLAW–SOIL INTERACTION CLAW–SOIL INTERACTION MODEL CLAW–SOIL INTERACTION RESULTS DESIGN OF BIONIC SUBSOILER AND STUDY ON SUBSOILING EFFECT DESIGN OF BIONIC SUBSOILER PFC3D SIMULATION ANALYSIS OF SUBSOILING EFFECT THE EFFECT OF TWO WINGS OF SUBSOILER ON TILLAGE BASED ON DEM THE SUBSOILING TOOL AND THE SOIL PARAMETERS IN PFC3D DESCRIPTION OF THE SUBSOILING TOOLS SOIL PARTICLES AND PARAMETERS VALIDATION OF THE MODEL VIRTUAL TEST OF THE TWO DESIGN ALTERNATIVES USING PFC3D COMPARISON OF THE TWO DESIGN ALTERNATIVES KINETIC ENERGY OF SOIL PARTICLES CONCLUSION AND PROSPECT WORK SUMMARY MAIN CONCLUSIONS PROSPECT