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Teaching Video of Discrete Element Method and MatDEM (Subtitles in English and Chinese)

Discrete Element Analysis in Geotechnical Engineering
- Theory and Application of MatDEM

   Speaker: Chun Liu, Nanjing University
   Sutitle group: Qiang Tang, Xiaowei Yang, Yao Zhu, Chenguang Zhu, Yehuan Huang, Liwei Liang

Online video are moved to https://space.bilibili.com/380808616/#/ (no advertisements) 

These video can be download from https://pan.baidu.com/s/1_jPRaO31OyyE0TYfmQPjFw (with Chinese and English subtitles, and including the following 10 chapters)

Part I Theory

Chapter 01 Principle and Implementation of Discrete Element Method, 55 minutes
   01.1 Application fields and basic principle of discrete element method 
   01.2 Damped harmonic vibration of element 
   01.3 Three major issures of discrete element method 
   01.4 Interface and operations of MatDEM 

Chapter 02 The Basic Structure of MatDEM, 61 minutes 
   
02.1 Modeling by using struct data and function
  
02.2 Element type and elastic Clump 
   
02.3 Introduction of help file and data structure of MatDEM
   
02.4 Filter of elements and post-processing commands 

Chapter 03 Modular Modeling of MatDEM, 76 minutes 
   03.1 Automatic material training 
   03.2 Digital elevation modeling and standard balance 
   03.3 Modeling process of BoxLayer example
   03.4 Definition and use of filter and group 
   03.5 Use of elastic Clump and application of boundary conditions 
   03.6 Balancing model, section display and data save

Chapter 04 Example of MatDEM Modeling Process, 65 minutes 
   04.1 Making struct data of balls and blocks 
   04.2 Modeling from an empty box 
   04.3 Applying load and numerical simulation 
   04.4 Using digital elevation data to define layers 
   04.5 Using Tool_Cut and images to cut model 

Chapter 05 Modeling Essentials and Frequently Asked Questions, 45 minutes

   05.1 Modification of element properties of specified group 
   05.2 Understanding of pressure platen and digital elevation modeling 
   05.3 Setting of parameters of iteration calculation at the third step 

Part II Application

Chapter 06 Pile-soil Interaction - Detailed Modeling Process, 132 minutes

   06.1 Understanding the effect of code through the example window 
   06.2 Simulation box customization and element gravity deposition
   06.3 Gravity balancing of sample and data saving 
   06.4 Importing data and building soil layer 
   06.5 Definition and application of materials 
   06.6 Building a pile model and embed it in the soil 

   06.7 Balancing operations and check of pile-soil model 
   06.8 Numerical simulation of pile pulling process 

Chapter 07 Microwave-assisted Rock Breaking - Mixing of Various Materials, 112 minutes 

   07.1 Establishing the geometric model of microwave-assisted rock breaking 
  
07.2 Cutting model and defining material
   
07.3 Distinguish and set Clump of different materials 
   
07.4 Model balancing method and its effect
   
07.5 Check of model balancing status 
   
07.6 Setting of cycle number and time step 
   
07.7 Thermal expansion and fracture formation of particles 
   
07.8 Modeling essentials of microwave-assisted breaking rock 

20181027,Updated next week

Chapter 08 Tunnel and Ground Settlement - Structure and Soil, 60 minutes 

   08.1 Using custom functions to make a tunnel tube
   08.2 Tunnel excavation and embedded tunnel tube
   08.3 Tight contact between tunnel tube and soil
   08.4 Application of load and numerical simulation 

Chapter 09 Torsional Shear and Direct Shear Test - Discrete Element Test, 64 minutes

   09.1 Defining test parameters and making sample 
   09.2 Making torsion shear test box
   09.3 Put the sample into the shear box
   09.4 Material setting and numerical simulation 

Chapter 10 Triaxial Stress and Joints - Deep Rock Mechanics, 69 minutes

   10.1 Construction of a triaxial test box
   10.2 Apply of triaxial stress
   10.3 Using triangles and polygons to define joint faces 
   10.4 Using Tool_Cut to define complex joint faces 

739 minutes in total

Books related to the video will be published at the end of 2018, in both English (Springer) and Chinese.



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