A Micromechanical Model for Simulation of Rock Failure ...

2020-7-24 · Quasi-brittle materials such as rock are rate sensitive materials and their behaviour under dynamic loading is not identical with that under static loading. In this study, numerical Brazilian tensile tests are conducted using a Split Hopkinson Pressure Bar system in an attempt to reproduce the dynamic increase factors (DIF) of the experimental tests. The rock is …

Petrel Geology & Modeling

Full suite of tools including petroleum systems modeling, well correlation, mapping, and geocellular modeling. The Petrel E&P software platform provides a full range of tools to solve the most complex structural and stratigraphic challenges—from regional exploration to reservoir development. Within a single environment, geoscientists can ...

A New Dynamic Wettability-Alteration Model for Oil-Wet ...

2013-5-19 · Wettability modification of solid rocks with surfactants is an important process and has the potential to recover oil from reservoirs. When wettability is altered by use of surfactant solutions, capillary pressure, relative permeabilities, and residual oil saturations change wherever the porous rock is contacted by the surfactant.

CHAMELEON: A Hierarchical Clustering Algorithm Using ...

2020-7-21 · CHAMELEON: A Hierarchical Clustering Algorithm Using Dynamic Modeling. Clustering in data mining is a discovery process that groups a set of data such that the intracluster similarity is maximized and the intercluster similarity is minimized. Existing clustering algorithms, such as K-means, PAM, CLARANS, DBSCAN, CURE, and ROCK are designed to ...

Micromechanical modeling of the dynamic fracture …

1996-6-1 · SONG and KIM: MODELING OF THE DYNAMIC FRACTURE PROCESS 391 i i~ i: i~i"~ ~ = ~i A o v 6, I.k A cO 6, om I.k A ..Q CO 6, iZ "O v 6, ol I.k ..Q v 6, I.I- A .a o,1 6, o~ kl. SONG and KIM: MODELING OF THE DYNAMIC FRACTURE PROCESS 393 Moreover, when a spring fails in the numerical model, the strain energy is redistributed among the remaining …

The Principles of Systems Science

2014-5-7 · •A rock at the atomic level of interaction is a chemical process operating over very long time scales •A rock, not having usable energy or material inputs is undergoing a long process of decay •Processes, if examined at a lower scale (higher resolution in a microscope), are made up of objects that seem to have form and solidity

Rock Slope Stability Analysis – Utilization of Advanced ...

2004-12-11 · Rock Slope Stability Analysis - Utilization of Advanced Numerical Techniques ... dynamic loading are also presented. The steps taken in performing a numerical analysis are ... design process by providing key insights into potential stability problems and failure mechanisms. Yet it must also be emphasized that numerical modelling is a tool and ...

Introduction to Reservoir Simulation

2018-6-12 · •The process of calculating the output is deterministic process •Element of chance is involved • Don''t see exactly when it will occur, but the possibility is known •Example. Roll a die until it comes up ''3''. • Know that in each roll, a ''3'' will come up with probability 1/6. Deterministic Probabilistic Probabilistic and ...

Numerical modeling of the emplacement of Socompa rock ...

2005-12-16 · [1] The 7.5 ka Socompa sector collapse emplaced 25 km 3 of fragmented rock as a thin, but widespread (500 km 2), avalanche deposit, followed by late stage sliding of 11 km 3 as Toreva blocks. Most of the avalanche mass was emplaced dry, although saturation of a basal shear layer cannot be excluded. Modeling was carried out using the depth-averaged granular …

Jidong Zhao''s Computational Granular Mechanics Lab

2021-6-9 · Multiscale modeling of thermo-mechanical coupling. We have further developed a novel multiscale modeling framework to simulate coupled thermo-mechanical behavior in granular media. We employ dual FEMs, one for mechanical and the other for thermal, which share common Gauss points.

Numerical modelling

2019-6-28 · Rock mass is a natural geological material, therefore the physical and engineering properties of it have to be established rather than defined through a manufacturing process like steel. Rock mass is a massively Discontinuous, Inhomogeneous, Anisotropic and Non-Elastic (DIANE) material. Due to dynamic movements of the upper crust of the earth ...

Feng JIN | Professor (Full) | PhD | Tsinghua University ...

Corrigendum to "Prediction on dynamic modulus of asphalt concrete with random aggregate modeling methods and virtual physics engine" [Constr. Build. Mater. 125 (2016) 987–997] Article

The Dynamic Sulfide Saturation Process and a Possible …

The Dynamic Sulfide Saturation Process and a Possible Slab Break-off Model for the Giant Xiarihamu Magmatic Nickel Ore Deposit in the East Kunlun Orogenic Belt, Northern Qinghai-Tibet Plateau, China ... In situ δ5 34 S V-CDT value of pyrite from the country rock ... Our modeling shows that the Xiarihamu parental magma may have achieved sulfide ...

HAMELEON: A Hierarchical Clustering Algorithm Using ...

2021-9-29 · a dynamic model. In the clustering process, two clusters are merged only if the inter-connectivity and closeness (proximity) between two clusters are high relative to the internal inter-connectivity of the clusters and closeness of items within the clusters. The merging process using the dynamic model presented in this paper facilitates discovery

Performance Evaluation of Hard Rock TBMs considering ...

2. Modeling of Hard Rock TBMs 2.1. Dynamic Model of Opening Hard Rock TBMs. An opening hard rock TBM consists essentially of a cutterhead driving system and a hydraulic thrust system, as shown in Figure 1. In rock cutting process, the cutterhead rotates and moves ahead simultaneously, and consequently rock on tunnel face spalls continuously ...

The Rock Cycle | National Geographic Society

Through the process of erosion, these fragments are removed from their source and transported by wind, water, ice, or biological activity to a new location. Once the sediment settles somewhere, and enough of it collects, the lowest layers become compacted so tightly that they form solid rock.

Discrete Element Modeling of Dynamic Compaction with ...

Discrete Element Modeling of Dynamic Compaction with Different Tamping Condition. 1 -. 2 Civil Engineering Department, Qazvin Branch, Islamic Azad University, Qazvin, Iran. Dynamic Compaction (DC) is a common deep compaction method that is usually used for densification of coarse-grained soils. Although traditional continuum-based models such ...

CHAPTER 6 STATIC RESERVOIR MODEL

2007-6-6 · reservoir flow simulator to obtain a dynamic model. The workflow involved in calibration of the geomodel with dynamic data is not shown in Figure 6.1 but was an important part of testing and refining the geomodel. Dynamic modeling has been performed on one 9-square-mile and two 12-square-mile areas (23 and 31 km2), including

A Deep-Learning-Based Approach for Reservoir …

2021-6-16 · This paper presents a deep-learning-based proxy modeling approach to efficiently forecast reservoir pressure and fluid saturation in heterogeneous reservoirs during waterflooding. The proxy model is built on a recently developed deep-learning framework, the coupled generative adversarial network (Co-GAN), to learn the joint distribution of ...

Nonlinear Dynamics of Rock: Hysteretic Behavior

2017-11-27 · Dynamic nonlinear response may manifest itself in a variety of manners. Let us outline some key indicators of nonlinear hysteretic behavior of rock from the static and, mostly, dynamic data of laboratory experiments. 2.1. Quasi-static experiments The most direct observation of elastic nonlinearity in solids comes from quasi-static tests of stress

Prediction Model of Drilling Performance for Percussive ...

This study suggests a method for quantitatively estimating the drilling performance of the down-the-hole (DTH) hammer during percussive drilling of rock surfaces. A pneumatic dynamic model of the DTH hammer was developed that considers the mass flow rate relations representing the orifice opening areas of the air tube, the piston, and bit flushing channels.

Numerical modeling of acoustic emission during rock ...

2018-9-1 · Numerical modeling of acoustic emission during rock failure process using a Voronoi element based – explicit numerical manifold method ... the entire dynamic evolution process of these micro-mechanical behaviors cannot be continuously captured during laboratory tests even with the help of ... Modeling rock joints and blocks by manifold method ...

Damage Evolution During Rock Pulverization Induced by ...

2020-4-16 · Rock pulverization is a geological process in which fault zone rocks are shattered in situ, into fine grains much smaller than the original grain size, without significant shear strain. Investigations regarding the genesis of pulverized fault zone rock (PFZR) suggested that it is a coseismic phenomenon and may be closely associated with ...

Development of a Numerical Simulator for 3-D Dynamic ...

An advantage of the FDEM(ECZM) is first presented through a three-dimensional (3D) numerical modeling of a dynamic tension test. In addition, the effect of considering the anisotropy of wave propagation in granite, which has been neglected in all the previous works using the FDEM, is investigated through the 3D FDEM(ECZM) simulation of a ...

Chameleon: hierarchical clustering using dynamic …

2021-9-15 · Chameleon: hierarchical clustering using dynamic modeling. Abstract: Clustering is a discovery process in data mining. It groups a set of data in a way that maximizes the similarity within clusters and minimizes the similarity between two different clusters. Many advanced algorithms have difficulty dealing with highly variable clusters that do ...

GitHub

2020-11-24 · The dynamic topic modeling process consists of three steps, discussed below. The archive ''data/sample.zip'' contains a sample corpus of 1,324 news articles divided into three time windows (month1, month2, month3), which …

Dynamic Analysis of Impact Tools by Using a Method …

2003-3-21 · We present a numerical method derived from the Impulse-Linear Momentum Principle that can be used in the design of impact tools for rock drilling. This method allows the prediction of energy transmission to rock, the profiles of stress, displacement and velocity, all of which are important in the dynamic analysis of such tools.

Feng DAI, Professor, Ph.D., University of Toronto, Canada ...

Underground rock masses containing preexisting flaws are usually subjected to a coupled effect of static pre-stress and dynamic disturbance involving earthquake.

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