4.7 Article

Numerical study of unstable failure behavior in heterogeneous rock pillar

相关参考文献

注意:仅列出部分参考文献,下载原文获取全部文献信息。
Article Computer Science, Interdisciplinary Applications

FDEM numerical study on the mechanical characteristics and failure behavior of heterogeneous rock based on the Weibull distribution of mechanical parameters

Penghai Deng et al.

Summary: In this paper, a random parameter assignment method based on the combined finite-discrete element method is proposed to simulate the mechanical properties and failure behavior of heterogeneous rock. The simulation results show that with an increase in the heterogeneity m value, the strength parameters, elastic modulus, and tensile strength of the rock increase exponentially and approach those of the homogeneous rock sample. The simulation results of tunnel excavation indicate that the overall fracture morphology of the surrounding rock remains unchanged, but the failure degree and maximum fracture propagation range decrease exponentially with an increase in the m value.

COMPUTERS AND GEOTECHNICS (2023)

Article Engineering, Geological

Theoretical verification of the rationality of strain energy storage index as rockburst criterion based on linear energy storage law

Fengqiang Gong et al.

Summary: The rationality of using strain energy storage index (Wet) for evaluating rockburst proneness was theoretically verified in this study. The peak-strength strain energy storage index (Wpet) was found to be a stable and better index for reflecting the relative magnitudes of stored energy and dissipated energy of rocks than the conventional strain energy storage index.

JOURNAL OF ROCK MECHANICS AND GEOTECHNICAL ENGINEERING (2022)

Article Engineering, Geological

Extremely large deformation of tunnel induced by rock mass fracture using GPGPU parallel FDEM

Hao Ma et al.

Summary: This paper introduces two representative large deformation engineering examples to study the squeezing behavior in deep tunnels. It proposes new algorithms and develops a parallel program to simulate the rock fracture process. The study investigates the excavation process and the effect of rock reinforcement on tunnel stability. The findings provide insights into the squeezing behavior and offer recommendations for support design.

INTERNATIONAL JOURNAL FOR NUMERICAL AND ANALYTICAL METHODS IN GEOMECHANICS (2022)

Article Engineering, Geological

Post-Peak Stress-Strain Curves of Brittle Hard Rocks Under Different Loading Environment System Stiffness

P. Y. Hou et al.

Summary: This study systematically explores the influence of Loading Environment System Stiffness (LESS) on post-peak stress-strain curves and failure modes of brittle hard rocks. The results show that lower LESS leads to steeper post-peak descending slopes of stress-strain curves, while higher LESS results in gentler slopes. Additionally, as LESS increases, AE events transition from a concentrated distribution near peak strength to a dispersed distribution throughout the post-peak deformation stage. The number of splitting macrocracks and the degree of damage decrease with increasing LESS, indicating a more stable post-peak failure process. The study also analyzes the mechanism behind the different post-peak descending slopes under different LESS through the variations of axial stress, axial and lateral strains, rates of axial and lateral strains over time. Fitting formulas relating LESS to the post-peak deformation modulus are established, and the importance of considering LESS for accurate parameters in rock engineering design and analysis is discussed.

ROCK MECHANICS AND ROCK ENGINEERING (2022)

Article Engineering, Multidisciplinary

Modelling of gas-driven fracturing and fragmentation in liquid CO2 blasting using finite-discrete element method

Ben Wang et al.

Summary: Gas pressurization plays a significant role in driving fractures and enhancing fragmentation in CO2 blasting. It increases the fracture zone and crack count, reduces the average size of fragments, and increases the fractal dimension of the debris distribution. Gas pressurization also leads to more serious vibration disasters.

ENGINEERING ANALYSIS WITH BOUNDARY ELEMENTS (2022)

Article Engineering, Multidisciplinary

Transgranular fracturing of crystalline rocks and its influence on rock strengths: Insights from a grain-scale continuum-discontinuum approach

X. F. Li et al.

Summary: This study aims to understand the effects of micro-heterogeneity on the initiation, propagation, and coalescence of microcracks in rocks. The research reveals that grain size, morphology, and mineralogy play significant roles in determining the mechanical properties of rocks, such as crack initiation stress and compression strength.

COMPUTER METHODS IN APPLIED MECHANICS AND ENGINEERING (2021)

Article Engineering, Geological

A statistical index indicating the degree and mechanical effects of grain size heterogeneity in rocks

Zhenhua Han et al.

Summary: An improved grain size heterogeneity index H-e was proposed to better analyze the rock mechanical properties. The study found that both grain size heterogeneity and material heterogeneity have significant impacts on the strength and evolution of microcracks in rocks.

ENGINEERING GEOLOGY (2021)

Article Engineering, Geological

Post-peak Stress-Strain curves of brittle hard rocks under axial-strain-controlled loading

M. Cai et al.

Summary: Stiffman is a super stiff rock mechanics testing machine that overcomes technical difficulties of conventional machines by using composite loading frames and relay loading with two hydraulic actuators. It provides a reliable platform for studying the post-peak deformation behaviors of brittle hard rocks under axial-strain-controlled loading.

INTERNATIONAL JOURNAL OF ROCK MECHANICS AND MINING SCIENCES (2021)

Article Engineering, Geological

A novel GPGPU-parallelized contact detection algorithm for combined finite-discrete element method

He Liu et al.

Summary: This paper introduces a novel algorithm for contact detection in the three-dimensional combined finite-discrete element method, which is fully parallelized using CUDA. The efficiency and effectiveness of the algorithm have been validated through numerical tests, showing linear computation time proportional to the number of potential contact pairs regardless of element size distribution. The proposed methodology can also be applied to 2D FDEM and DEM.

INTERNATIONAL JOURNAL OF ROCK MECHANICS AND MINING SCIENCES (2021)

Article Engineering, Geological

Experimental and Numerical Investigation on the Role of Energy Transition in Strainbursts

Fuqiang Gao et al.

Summary: This study investigates the conversion and release of elastic energy stored in rocks during strainbursts through experimental and numerical simulations. Softer rocks tend to store more elastic energy and thus contribute more to strainbursts in surrounding rocks.

ROCK MECHANICS AND ROCK ENGINEERING (2021)

Article Engineering, Geological

Experimental Study on Damage and Fracture Characteristics of Beishan Granite Subjected to High-temperature Treatment with DIC and AE Techniques

Shuting Miao et al.

Summary: The study examines the physical and mechanical characteristics as well as fracturing behavior of Beishan granite under high temperatures up to 800 degrees C. Results show varying responses of the granite to temperature, with a critical temperature for brittle-ductile transition between 500 and 600 degrees C. The evolution of damage and fracture mechanism in heated granite is investigated through a combination of AE and DIC techniques.

ROCK MECHANICS AND ROCK ENGINEERING (2021)

Article Engineering, Geological

Investigating the crack initiation and propagation mechanism in brittle rocks using grain-based finite-discrete element method

X. F. Li et al.

INTERNATIONAL JOURNAL OF ROCK MECHANICS AND MINING SCIENCES (2020)

Article Mathematics, Interdisciplinary Applications

HOSS: an implementation of the combined finite-discrete element method

Earl E. Knight et al.

COMPUTATIONAL PARTICLE MECHANICS (2020)

Article Engineering, Geological

Modeling Damage Evolution in Heterogeneous Granite Using Digital Image-Based Grain-Based Model

Xunjian Hu et al.

ROCK MECHANICS AND ROCK ENGINEERING (2020)

Article Computer Science, Interdisciplinary Applications

Long-term prediction of rockburst hazard in deep underground openings using three robust data mining techniques

Roohollah Shirani Faradonbeh et al.

ENGINEERING WITH COMPUTERS (2019)

Article Engineering, Geological

Development of a GPGPU-parallelized hybrid finite-discrete element method for modeling rock fracture

Daisuke Fukuda et al.

INTERNATIONAL JOURNAL FOR NUMERICAL AND ANALYTICAL METHODS IN GEOMECHANICS (2019)

Article Engineering, Geological

A peak-strength strain energy storage index for rock burst proneness of rock materials

Fengqiang Gong et al.

INTERNATIONAL JOURNAL OF ROCK MECHANICS AND MINING SCIENCES (2019)

Article Engineering, Geological

Evolution of Local Mine Stiffness with Mining Process: Insight from Physical and Numerical Modeling

Fuqiang Gao et al.

ROCK MECHANICS AND ROCK ENGINEERING (2019)

Article Engineering, Geological

Influence of strain energy released from a test machine on rock failure process

Y. H. Xu et al.

CANADIAN GEOTECHNICAL JOURNAL (2018)

Review Computer Science, Interdisciplinary Applications

A review of numerical techniques approaching microstructures of crystalline rocks

Yahui Zhang et al.

COMPUTERS & GEOSCIENCES (2018)

Article Computer Science, Interdisciplinary Applications

Mechanical properties of brittle rock governed by micro-geometric heterogeneity

Guang Liu et al.

COMPUTERS AND GEOTECHNICS (2018)

Article Computer Science, Interdisciplinary Applications

Grain based modelling of rocks using the combined finite-discrete element method

Aly Abdelaziz et al.

COMPUTERS AND GEOTECHNICS (2018)

Article Computer Science, Interdisciplinary Applications

Acceleration of a 2D/3D finite-discrete element code for geomechanical simulations using General Purpose GPU computing

A. Lisjak et al.

COMPUTERS AND GEOTECHNICS (2018)

Article Geochemistry & Geophysics

Influence of grain size heterogeneity on strength and microcracking behavior of crystalline rocks

Jun Peng et al.

JOURNAL OF GEOPHYSICAL RESEARCH-SOLID EARTH (2017)

Article Computer Science, Interdisciplinary Applications

FDEM-flow3D: A 3D hydro-mechanical coupled model considering the pore seepage of rock matrix for simulating three-dimensional hydraulic fracturing

Chengzeng Yan et al.

COMPUTERS AND GEOTECHNICS (2017)

Article Engineering, Geological

Simulation of unstable rock failure under unloading conditions

Amin Manouchehrian et al.

CANADIAN GEOTECHNICAL JOURNAL (2016)

Article Computer Science, Interdisciplinary Applications

Numerical simulation of microstructure of brittle rock using a grain-breakable distinct element grain-based model

Fuqiang Gao et al.

COMPUTERS AND GEOTECHNICS (2016)

Article Engineering, Geological

Estimation of rockburst wall-rock velocity invoked by slab flexure sources in deep tunnels

Shili Qiu et al.

CANADIAN GEOTECHNICAL JOURNAL (2014)

Article Engineering, Geological

The application of a modified Voronoi logic to brittle fracture modelling at the laboratory and field scale

F. Q. Gao et al.

INTERNATIONAL JOURNAL OF ROCK MECHANICS AND MINING SCIENCES (2014)

Article Engineering, Geological

Characterizing the mechanical tensile behavior of Beishan granite with different experimental methods

Jianfeng Liu et al.

INTERNATIONAL JOURNAL OF ROCK MECHANICS AND MINING SCIENCES (2014)

Article Construction & Building Technology

Study on splitting failure in rock masses by simulation test, site monitoring and energy model

Weishen Zhu et al.

TUNNELLING AND UNDERGROUND SPACE TECHNOLOGY (2014)

Article Engineering, Geological

Experimental Investigation of Bedding Plane Orientation on the Rockburst Behavior of Sandstone

M. C. He et al.

ROCK MECHANICS AND ROCK ENGINEERING (2012)

Article Engineering, Multidisciplinary

Large-scale 3D random polycrystals for the finite element method: Generation, meshing and remeshing

R. Quey et al.

COMPUTER METHODS IN APPLIED MECHANICS AND ENGINEERING (2011)

Proceedings Paper Construction & Building Technology

Catastrophe Theory Analysis On Asymmetric Mining Pillar Dynamic Failure

Zhiqiang Wang et al.

FRONTIERS OF GREEN BUILDING, MATERIALS AND CIVIL ENGINEERING, PTS 1-8 (2011)

Article Engineering, Geological

Micromechanical parameters in bonded particle method for modelling of brittle material failure

T. Kazerani et al.

INTERNATIONAL JOURNAL FOR NUMERICAL AND ANALYTICAL METHODS IN GEOMECHANICS (2010)

Article Engineering, Multidisciplinary

Gmsh: A 3-D finite element mesh generator with built-in pre- and post-processing facilities

Christophe Geuzaine et al.

INTERNATIONAL JOURNAL FOR NUMERICAL METHODS IN ENGINEERING (2009)

Article Engineering, Multidisciplinary

Hybrid discrete element/finite element method for fracture analysis

N. Monteiro Azevedo et al.

COMPUTER METHODS IN APPLIED MECHANICS AND ENGINEERING (2006)

Article Engineering, Geological

Characterization of rock heterogeneity and numerical verification

HY Liu et al.

ENGINEERING GEOLOGY (2004)

Article Engineering, Geological

Modelling brittle failure of rock

V Hajiabdolmajid et al.

INTERNATIONAL JOURNAL OF ROCK MECHANICS AND MINING SCIENCES (2002)

Article Materials Science, Multidisciplinary

Three-dimensional periodic Voronoi grain models and micromechanical FE-simulations of a two-phase steel

M Nygårds et al.

COMPUTATIONAL MATERIALS SCIENCE (2002)