digital image based numerical simulation on failure process

Aug 06, 2010· 6.5.1 Digital image based modelling method 6.5.2 Numerical model based on the digital image 6.5.3 Simulation results for uniaxial compression 6.5.4 Influence of interface strength . 7. The effect of rock anisotropy on rock failure 7.1 Introduction 7.2 Numerical models . 8. Loading, unloading and the Kaiser Effect 8.1 Introduction 8.2 Numerical ...

So, the numerical simulation method is used in the study [28 – 33]. Some scholars have adopted the finite element method to construct the model, but there are some defects in reflecting the rock failure form. The discrete element numerical model method is used to reconstruct the mesoscopic rock structure [34 – 37].

Oct 25, 2014· It is generally accepted that material heterogeneity has a great influence on the deformation, strength, damage and failure modes of rock. This paper presents numerical simulation on rock failure process based on the characterization of rock heterogeneity by using a digital image processing (DIP) technique. The actual heterogeneity of rock at mesoscopic scale (characterized as …

Research Article Study on the Microscopic Fracture Process and Acoustic Emission of Shale Based on Digital Image Motian Tang,1 Zhonghu Wu,1,2,3 Anli Wang,4 Yujun Zuo,5 Yili Lou,1 Hao Liu,5 and Wenjibin Sun5 1College of Civil Engineering, Guizhou University, Guiyang 550025, China 2School of Qilu Transportation, Shandong University, Jinan 250002, China 3Geotechnical and Structural Engineering ...

This paper presents a new meso-mechanical analysis method of rock failure. The actual inhomogeneity of rock at meso-scale level is represented by processing the image of rock section and incorporated into Realistic Failure Process Analysis code (abbreviated as RFPA2D). Here, this numerical tool is employed to study the fracture phenomena of granite sample considering the interface strength ...

May 24, 2017· The effect of a preexisting crack with different inclination angles and lengths on mechanical properties, fracture initiation, and propagation in a Brazilian disc was investigated in this paper. In the experiment, digital image correlation (DIC) method was employed to record the deformation in the specimen. Different failure patterns, depending on inclination angles and lengths of …

Sep 01, 2004· This paper has presented a digital image processing-based numerical modeling method for two-dimensional failure prediction of rocks by taking into account the actual material non-homogeneity. The method is a combination of digital color image processing techniques, vector data transformation and conventional computational mechanics methods.

Feb 12, 2015· Mesoscopic Numerical Simulation of Stratified Rock Failure Using Digital Image Processing Ang Li, Guo-jian Shao, Tian-tang Yu, Jing-bo Su, and Sheng-yong Ding Advances in Mechanical Engineering 2015 10.1155/2014/106073

ResearchArticle Numerical Test Study of the Microscale Failure Modes and Fractal Analysis of Lower Cambrian Shale Based on Digital Images Hengtao Cui,1 Zhonghu Wu,1,2,3 Liping Li,2,3 Jing Wang,2,3 Shuguang Song,4 Shangqu Sun,5 Yujun Zuo,6 Hao Liu,6 and Yili Lou1 1CollegeofCivilEngineering,GuizhouUniversity,Guiyang550025,China …

The mechanism of soil arching effect is important for anti-slide pile design. With the 2D particle flow method (PFC2D), the forming and failure process of the soil arching between anti-slide piles are simulated. The results show that the forming mechanism of soil arching mainly depended on stress transit process of micro soil granule. In the anti-slide pile numerical models (PFC2D), the ...

Jan 01, 2008· ： Failure mechanism study on vertically stratified rock mass around deep tunnel ： Digital image-based numerical simulation on failure process of concrete ICP05001357 ：·2 ：116024

This paper presents a digital image based approach for three-dimensional (3-D) numerical simulation and failure analysis of rocks by taking into account the actual 3-D heterogeneity. Digital image techniques are adopted to extract two-dimensional (2-D) material heterogeneity from material surface images. The 2-D image mesostructures are further extrapolated to 3-D cuboid mesostructures by ...

Digital Image-based Numerical Simulation on Failure Process of Concrete. Engineering Mechanics, 2008, 25(9): 72 -78(In Chinese). [4] Yan Liu, Cheng Yi, Tingting Guo.

Jun 22, 2016· This study presents a numerical analysis based on the combination of discrete element method and digital image processing. The actual heterogeneity with respect to mineral composition of the rock was reproduced by digital image processing (DIP) method and used as input to set up a corresponding numerical discrete element model based on Voronoi ...

Digital image processing for physical basis analysis of electrical failure forecasting in XLPE power cables based on field simulation using finite-element method ISSN 1751-8687 Received on 19th June 2020 Revised 17th November 2020 Accepted on 11th December 2020 E-First on 27th January 2021 doi: 10.1049/iet-gtd.2020.1176

Feb 16, 2018· The numerical models for grain size effect were set up based on the experimental data using digital image processing (DIP) techniques. Then numerical simulations under uniaxial compressive conditions were carried out using RFPA code and the grain size effect is discussed.

This paper presents a digital image based approach for three-dimensional (3-D) numerical simulation and failure analysis of rocks by taking into account the actual 3-D heterogeneity. Digital image techniques are adopted to extract two-dimensional (2-D) material heterogeneity from material surface images.

Mar 17, 2017· This paper develops a numerical approach to determine the mechanical behavior of discrete fractures network (DFN) models based on digital image processing technique and particle flow code (PFC2D). A series of direct shear tests of jointed rocks were numerically performed to study the effect of normal stress, friction coefficient and joint bond strength on the mechanical behavior of joint …

ResearchArticle Mesoscopic Numerical Simulation of Stratified Rock Failure Using Digital Image Processing AngLi,1 Guo-jianShao,1 Tian-tangYu,1 Jing-boSu,2 andSheng-yongDing1 ...

Dec 28, 2020· On the microscale, based on digital image processing technology, this paper characterizes the nonuniformity of minerals in shale, a numerical model that can reflect the true microstructure of shale. Then, the failure process of shale …

Aug 01, 2020· The entire image-based DE model generation workflow is shown in Fig. 3. In this diagram, each connection denotes a subtask that converts the digital image into the target state. As shown in Fig. 3, the process starts with a stack of gray-scale slices from the selected XCT images of HCR. Next, image analysis is carried out to obtain the multi ...

This paper presents a digital image processing (DIP) based finite difference method (FDM) and makes the first attempt to apply the new method to the failure process of stratified rocks from ...

Aug 01, 2014· Mesoscopic Numerical Simulation of Stratified Rock Failure Using Digital Image Processing ... This paper presents a digital image processing (DIP) based finite difference method (FDM) and makes the first attempt to apply the new method to the failure process of stratified rocks from Chinese Jinping underground carves. In the method, the two ...

Mar 19, 2020· Digital Image Correlation and Numerical Simulation Techniques He Zhang *, Fatick Nath, Prathmesh Naik Parrikar and Mehdi Mokhtari ... DIC is an image-based optical method that records an object with a camera and monitors ... Although researchers had been trying to solve the problem of the complex rock failure process using local measurement ...

A digital-image-based (DIB) finite element approach is developed based on the numerical code rock failure process analysis (RFPA) to characterize micro-scale rock heterogeneity, and to understand ...

digital image-based numerical simulation on failure process of concrete YU Qing-lei1, TANG Chun-an2, ZHU Wan-cheng1, TANG Shi-bin2 (1. Department of Engineering Mechanics, College of Resource and Civil Engineering, Northeastern University, Shenyang, 110004,China; 2.

The macroscopic deformation and failure of rock is a gradual process involving damage accumulation; ... In recent decades, digital image correlation ... theoretical analysis and numerical simulation are often used to calculate the height of water-conduction fractured zone to indirectly determine the aquifer permeability. With the development of ...

In order to investigate the influence of lateral constraint on the breakage behaviour of high-sulfur coal, this paper combines digital image processing technology and rock failure process analysis system RFPA^2D to simulate the failure process of high-sulfur coal in Pu'an of Guizhou under uniaxial static load, and analyse the influences of lateral constraint on the crushing effect ...

Jan 01, 2019· This study numerically investigates the failure processes of recycled aggregate concrete (RAC) and natural aggregate concrete (NAC). A two-dimensional simulation based on a discrete-element method (DEM) is conducted with a universal distinct-element code (UDEC) program.

Digital-image Based Numerical Simulation on Failure Process of High-sulfur Coal . By Ye Junjian, Zhang Qin, Zuo Yujun and Cheng Wei. Cite . BibTex; Full citation; Publisher: 'Institute of Advanced Engineering and Science' Year: 2013. DOI identifier: 10.11591/telkomnika.v11i1.1889. OAI …