Engineering applications of discrete element method : operation analysis and optimization design of coal and agricultural machinery / Xuewen Wang, Bo Li, Rui Xia, Haozhou Ma.
Wang, Xuewen.; Li, Bo.; Xia, Rui.; Ma, Haozhou.
2021
TA347.F5
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Title Engineering applications of discrete element method : operation analysis and optimization design of coal and agricultural machinery / Xuewen Wang, Bo Li, Rui Xia, Haozhou Ma.
ISBN 9789811579776 (electronic bk.)
9811579776 (electronic bk.)
9811579768
9789811579769
DOI https://doi.org/10.1007/978-981-15-7977-6.
Imprint Singapore : Springer, [2021]
Language English
Description 1 online resource
Other Standard Identifiers 10.1007/978-981-15-7977-6. doi
10.1007/978-981-15-7
Call Number TA347.F5
Dewey Decimal Classification 518/.25
Summary This book introduces the engineering application of the discrete element method (DEM), especially the simulation analysis of the typical equipment (scraper conveyor, coal silos, subsoiler) in the coal and agricultural machinery. In this book, the DEM is applied to build rigid and loose coupling model, and the kinematic effect of the bulk materials, the mechanical effect of the interaction between the bulk materials, and the mechanical equipment in the operation process of the relevant equipment are studied. On this basis, the optimization design strategy of the relevant structure is proposed. This book effectively promotes the application of DEM in engineering, analyzes the operation state, failure mechanism, and operation effect of related equipment in operation, and provides theoretical basis for the optimal design of equipment. The book is intended for undergraduate and graduate students who are interested in mechanical engineering, researchers investigating coal and agricultural machinery, and engineers working on designing related equipments.
Bibliography, etc. Note Includes bibliographical references.
Access Note Access limited to authorized users.
Added Author Wang, Xuewen.
Li, Bo.
Xia, Rui.
Ma, Haozhou.
Series Engineering applications of computational methods ; v. 4.
Available in Other Form Engineering applications of discrete element method.
Linked Resources Online Access
Record Appears in Online Resources > Ebooks
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Intro
Preface
Contents
1 Introduction
1.1 Brief Introduction of DEM
1.2 The Development History of DEM
1.3 Basic Theory of DEM
1.3.1 Contact Theory of DEM
1.3.2 Particle Contact Search
1.3.3 Calculation of Particle Motion State
1.3.4 Determination of Time Step
1.4 Development Trend of DEM
1.4.1 Development of Theoretical Research
1.4.2 Improvement of Operation Efficiency
1.4.3 Multi-field Application
1.4.4 Software Development
1.4.5 Multi-algorithm Coupling Analysis
1.5 Parameter Calibration of DEM
1.5.1 Direct Measurement of the Test

1.5.2 Test-Simulation Combined Calibration Method
References
2 Application of DEM in Coal and Agricultural Machinery
2.1 Application of DEM in Coal Machine Equipment
2.1.1 Transportation Machinery
2.1.2 Mining Machinery
2.1.3 Other Coal Machine Equipment
2.2 Application of DEM in Agricultural Machinery Equipment Ripper
2.2.1 Loose Machinery
2.2.2 Seeding Machinery
2.2.3 Harvesting Machinery
2.2.4 Other Agricultural Machinery
References
3 Analysis of the Coal Bulk Transport State Based on DEM
3.1 EDEM Simulation Model Construction

3.1.1 Scraper Conveyor Model
3.1.2 Coal Bulk Model
3.2 EDEM Simulation Analysis of Transportation State Under Complex Conditions
3.2.1 Stable and Start-Stop Working Conditions
3.2.2 Material Accumulation Conditions
3.2.3 Gangue-Containing Working Conditions
3.2.4 Bottom Plate Tilting Condition
3.2.5 Viscosity Change Condition of Coal Bulk
3.3 Distribution and Movement State of Coal Bulk
3.3.1 Distribution State of Coal Bulk
3.3.2 Movement State of Coal Bulk
Reference
4 Mechanical Effect of Scraper Conveyor Based on DEM

4.1 EDEM Simulation Analysis of Bulk Load Characteristics
4.1.1 Reconstruction of Scraper Conveyor Model
4.1.2 Load Characteristics of Coal Bulk Under Normal Working Conditions
4.1.3 Load Characteristics of Coal Bulk Under Complex Working Conditions
4.2 EDEM Simulation Analysis of the Force Features of the Middle Trough of the Scraper Conveyor
4.2.1 Up and Down Hill Conditions
4.2.2 The Middle Trough Tilts the Condition in the Direction of the Push
4.2.3 Different Capacity Conditions
4.2.4 Ledge Local Accumulation Conditions

4.3 EDEM Simulation Analysis of Contact Mechanics and Wear Between the Coal Bulk and the Middle Trough
4.3.1 Theoretical Analysis of Contact Mechanics
4.3.2 Analysis of the Wear Mechanism of the Middle Trough
4.3.3 Analysis of the Wear Law of the Middle Trough
References
5 Application of DEM on the Design of Wear-Resistant Bionic Chute of Scraper Conveyor
5.1 Geometric Structure Characteristics of Wear-Resistant Organism Surface
5.1.1 Selection of Biological Geometric Structure Surface and Bionic Model
5.1.2 Pit-Shaped Biological Non-smooth Geometric Structure Surface

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