Evaluative Analysis of Formulas of Heat Transfer Coefficient of Rock Fracture
Sign Up to like & getrecommendations! Published in 2020 at "International Journal of Thermophysics"
DOI: 10.1007/s10765-020-02679-8
Abstract: Heat transfer coefficient (HTC) is a useful concept to characterize the heat exchange performance of rock fracture. However, existing study has preliminarily found that some HTC formulas would lead to abnormal values, which claims a… read more here.
Keywords: heat; rock fracture; transfer coefficient; heat transfer ... See more keywords
3D numerical modelling of rock fracture with a hybrid finite and cohesive element method
Sign Up to like & getrecommendations! Published in 2018 at "Engineering Fracture Mechanics"
DOI: 10.1016/j.engfracmech.2018.05.037
Abstract: Abstract To investigate the rock fracture, penetration force, and chip shape during rock breaking with a conical pick, a 3D numerical model was developed by inserting cohesive elements into finite elements. Mixed-mode cohesive traction response… read more here.
Keywords: fracture; method; conical pick; rock fracture ... See more keywords
An integrated approach to simulate fracture permeability and flow characteristics using regenerated rock fracture from 3-D scanning: A numerical study
Sign Up to like & getrecommendations! Published in 2018 at "Journal of Natural Gas Science and Engineering"
DOI: 10.1016/j.jngse.2018.02.033
Abstract: Abstract Fluid flow in a rock fracture bounded by two rock surfaces with surface asperities is a complex phenomenon to study. However, precise knowledge of the flow characteristics through a real rock fracture is essential… read more here.
Keywords: rock fracture; flow characteristics; study; fracture ... See more keywords
Analysis and Monitoring of Small-Scale Rock Fracture Zone Deformation and Shaft Failure in a Metal Mine
Sign Up to like & getrecommendations! Published in 2020 at "Advances in Civil Engineering"
DOI: 10.1155/2020/8879258
Abstract: Rock fracture zones were distributed in a metal mine, and their deformation was always neglected because they are available on a small scale. However, the deformation of the small-scale fracture zone may lead to serious… read more here.
Keywords: fracture; fracture zone; deformation; rock fracture ... See more keywords
FDEM Modelling of Rock Fracture Process during Three-Point Bending Test under Quasistatic and Dynamic Loading Conditions
Sign Up to like & getrecommendations! Published in 2021 at "Shock and Vibration"
DOI: 10.1155/2021/5566992
Abstract: A hybrid finite-discrete element method (FDEM) is proposed to model rock fracture initiation and propagation during a three-point bending test under quasistatic and dynamic loading conditions. Three fracture models have been implemented in the FDEM… read more here.
Keywords: dynamic loading; fracture; three point; test ... See more keywords
Rock fracture initiation and propagation by mechanical and hydraulic impact
Sign Up to like & getrecommendations! Published in 2019 at "Open Geosciences"
DOI: 10.1515/geo-2019-0061
Abstract: Abstract Rock fracture due to high-pressure fluid jetting and insert indentation was experimentally investigated. In the frame of this article, indentation designates the process of pressing a tungsten carbide insert (TCI) for roller cone bits… read more here.
Keywords: fracture; fracture initiation; initiation propagation; rock fracture ... See more keywords
A Stochastic Bulk Damage Model Based on Mohr-Coulomb Failure Criterion for Dynamic Rock Fracture
Sign Up to like & getrecommendations! Published in 2019 at "Applied Sciences"
DOI: 10.3390/app9050830
Abstract: We present a stochastic bulk damage model for rock fracture. The decomposition of strain or stress tensor to its negative and positive parts is often used to drive damage and evaluate the effective stress tensor.… read more here.
Keywords: damage; model; rock fracture; rock ... See more keywords
A Planar-3D Mathematical Model for Studying the Effect of Heterogeneity of Rock Fracture Toughness on Hydraulic Fracture Propagation: Early-Time Solution including the Stage before Propagation
Sign Up to like & getrecommendations! Published in 2023 at "Mathematics"
DOI: 10.3390/math11092083
Abstract: Among the studies of the effect of rock’s heterogeneity on hydraulic fracture propagation, very little information on the effects of the heterogeneity of rock’s fracture toughness is available. The objective of the present paper is… read more here.
Keywords: fracture; fracture toughness; fracture propagation; rock fracture ... See more keywords