NSTL国家科技图书文献中心

1. Modelling of particle flow code geotechnical material parameter relationships based on orthogonal design and back propagation neural network NSTL国家科技图书文献中心

Ni, Yaodong | Wang, Ruirui ... - 《Computational particle mechanics》 - 2025,12(1) - 371～398 - 共28页

摘要：The utilisation of particle* flow code to* | nature of the particle* action mechanism within the* | establish discrete element models represents an effective | approach for addressing the issue of discontinuous media | . This methodology has been employed by numerous

关键词： Discrete element method (DEM) | Particle flow code (PFC) | Orthogonal design | Back propagation (BP) Neural network

2. Numerical study on the strength and fracture of rock materials with multiple rough preexisting fissures under uniaxial compression using particle flow code NSTL国家科技图书文献中心

Wang, Min | Lu, Zhenxing ... - 《Computational particle mechanics》 - 2025,12(1) - 453～477 - 共25页

摘要：Preexisting fissures are common in rock mass | engineering, and these preexisting fissures can considerably | reduce the strength of rock masses and the stability of | rock mass engineering. Considering that the | preexisting fissures are not straight, a DEM numerical

关键词： Rough joints | Numerical simulation | JRC value | Peak strength

3. (109008)Effects of a single flaw on failure and acoustic emission characteristics around circular opening subjected to biaxial compression NSTL国家科技图书文献中心

Bing Liu | Yi Liu ... - 《Engineering failure analysis》 - 2025,167(Pt.A) - 1～27 - 共27页 - 被引量：1

摘要： experiments, and particle* flow code (PFC) software modeled* | Understanding the failure process in | surrounding rocks is essential for assessing the stability | of underground spaces and predicting potential | disasters. Although failure patterns around openings of

关键词： Underground opening | Flaws | Excavation damage zone | Acoustic emission | Particle Flow Code

4. Effect of prefabricated flaw angle on the mechanical properties and failure characteristics of stratified cemented tailings backfill NSTL国家科技图书文献中心

Chen, Shuaijun | Qin, Wenjing ... - 《Theoretical and Applied Fracture Mechanics》 - 2025,135 - 共13页

摘要： different flaw dip angles. Additionally, the Particle Flow | Code program was used to analyze the propagation of | The process of exposing stratified cemented | tailings backfill (SCTB) underground is prone to damage | due to blasting disturbances. To investigate the

关键词： Cemented tailings backfill | Stratified surfaces | Prefabricated flaw | Particle Flow Code | Failure characteristics

5. Investigation of Fatigue Mechanics and Crack Evolution Characteristics of Jointed Specimens Under Cyclic Uniaxial Compression NSTL国家科技图书文献中心

Miao Chen | Zihao Liu ... - 《Fatigue & Fracture of Engineering Materials & Structures》 - 2025,48(1) - 261～278 - 共18页 - 被引量：1

摘要：Nonpersistent joints are prevalent in | engineering rock masses and are sensitive to cyclic loads | induced by geological movements and engineering | disturbances. Therefore, studying the fatigue mechanisms of | rock masses with nonpersistent joints under cyclic

关键词： cyclic load | fatigue responses | nonpersistent jointed rock | particle flow code

6. Macroscopic and Mesoscopic Damage Characteristics and Energy Evolution Laws of Rock Mass With Double Arcuate Fractures Under Uniaxial Compression NSTL国家科技图书文献中心

Qingyang Ren | Senlin Gao ... - 《International journal for numerical and analytical methods in geomechanics》 - 2025,49(3) - 1038～1057 - 共20页

摘要： fissure red sandstone specimens. Then, particle flow | ABSTRACT In order to reveal the influence of | double arc‐shaped fissure dip angles on the macro‐micro | failure and energy evolution laws of rock masses, a | numerical model of red sandstone was firstly established

关键词： constitutive model | crack propagation | dissipative energy | double arc‐shaped fissure | particle flow code

7. Study on the microstructural evolution of gangue cemented backfill under uniaxial compression NSTL国家科技图书文献中心

Huang, Dongmei | Pan, Xin ... - 《Computational particle mechanics》 - 2025,12(1) - 557～571 - 共15页

摘要：In cemented paste backfill (CPB), the | connection mode and spatial position arrangement of | particles determine the deformation, structural strength | and stability of the backfill. Based on the scanning | electron microscope images of CPB, the representative

关键词： Cemented paste backfill | Digital image processing | Particle flow code method | Microscopic parameters

8. A calibration framework for DEM models based on the stress-strain curve of uniaxial compressive tests by using the AEO algorithm and several calibration suggestions NSTL国家科技图书文献中心

Wang, Min | Lu, Zhenxing ... - 《Computational particle mechanics》 - 2025,12(1) - 541～555 - 共15页

摘要：Before the discrete element method (DEM) is | implemented for numerical simulations, the microparameters | of the DEM models should be calibrated | . Microparameter calibration is a critically important procedure | for numerical DEM simulations. The macroparameters

关键词： DEM (discrete element method) | Microparameter calibration | Particle flow code (PFC) | Stress-strain curve | AEO (artificial ecosystem-based optimization) algorithm

9. Effect of Particle Size, Sphericity, and Distribution on Seepage in Granular Porous Media NSTL国家科技图书文献中心

Xiong, Bo-bo | Kuang, Rui ... - 《Geotechnical and geological engineering》 - 2025,43(3) - 131～ - 共20页

摘要： employing PFC(Particle* Flow Code) software, the | permeability of particle-pore media. Utilising the spatial | random convexity growth algorithm, soil particle models* | particle size and permeability coefficient was 0.82 | , which was dominant. The particle* size mainly affects*

关键词： Permeability | Soil porous media | Sphericity | Parking model

10. Study on the micro-scale deformation and damage of cemented Xiyu conglomerate by coupled seepage-flow action NSTL国家科技图书文献中心

Liewang Qiu | Chong Shi ... - 《Construction and Building Materials》 - 2025,471(Apr.11) - 140720.1～140720.12 - 共12页

摘要：, this paper adopts the particle* flow code (PFC3D) to* | effects of seepage flow* and cementation content on* | results show that: () smaller seepage flow* has less* | Poissons ratio decreased with increasing seepage flow | the seepage flow* rate is low, while it generally*

摘要：The utilisation of particle* flow code to* | nature of the particle* action mechanism within the* | establish discrete element models represents an effective | approach for addressing the issue of discontinuous media | . This methodology has been employed by numerous

关键词： Discrete element method (DEM) | Particle flow code (PFC) | Orthogonal design | Back propagation (BP) Neural network

摘要：Preexisting fissures are common in rock mass | engineering, and these preexisting fissures can considerably | reduce the strength of rock masses and the stability of | rock mass engineering. Considering that the | preexisting fissures are not straight, a DEM numerical

关键词： Rough joints | Numerical simulation | JRC value | Peak strength

摘要： experiments, and particle* flow code (PFC) software modeled* | Understanding the failure process in | surrounding rocks is essential for assessing the stability | of underground spaces and predicting potential | disasters. Although failure patterns around openings of

关键词： Underground opening | Flaws | Excavation damage zone | Acoustic emission | Particle Flow Code

摘要： different flaw dip angles. Additionally, the Particle Flow | Code program was used to analyze the propagation of | The process of exposing stratified cemented | tailings backfill (SCTB) underground is prone to damage | due to blasting disturbances. To investigate the

关键词： Cemented tailings backfill | Stratified surfaces | Prefabricated flaw | Particle Flow Code | Failure characteristics

摘要：Nonpersistent joints are prevalent in | engineering rock masses and are sensitive to cyclic loads | induced by geological movements and engineering | disturbances. Therefore, studying the fatigue mechanisms of | rock masses with nonpersistent joints under cyclic

关键词： cyclic load | fatigue responses | nonpersistent jointed rock | particle flow code

摘要： fissure red sandstone specimens. Then, particle flow | ABSTRACT In order to reveal the influence of | double arc‐shaped fissure dip angles on the macro‐micro | failure and energy evolution laws of rock masses, a | numerical model of red sandstone was firstly established

关键词： constitutive model | crack propagation | dissipative energy | double arc‐shaped fissure | particle flow code

摘要：In cemented paste backfill (CPB), the | connection mode and spatial position arrangement of | particles determine the deformation, structural strength | and stability of the backfill. Based on the scanning | electron microscope images of CPB, the representative

关键词： Cemented paste backfill | Digital image processing | Particle flow code method | Microscopic parameters

摘要：Before the discrete element method (DEM) is | implemented for numerical simulations, the microparameters | of the DEM models should be calibrated | . Microparameter calibration is a critically important procedure | for numerical DEM simulations. The macroparameters

关键词： DEM (discrete element method) | Microparameter calibration | Particle flow code (PFC) | Stress-strain curve | AEO (artificial ecosystem-based optimization) algorithm

摘要： employing PFC(Particle* Flow Code) software, the | permeability of particle-pore media. Utilising the spatial | random convexity growth algorithm, soil particle models* | particle size and permeability coefficient was 0.82 | , which was dominant. The particle* size mainly affects*

关键词： Permeability | Soil porous media | Sphericity | Parking model

摘要：, this paper adopts the particle* flow code (PFC3D) to* | effects of seepage flow* and cementation content on* | results show that: () smaller seepage flow* has less* | Poissons ratio decreased with increasing seepage flow | the seepage flow* rate is low, while it generally*

关键词： Xiyu conglomerate | Cemented material | Seepage-flow coupling effect | Discrete element | Deformation and failure characteristics

4008-161-200 800-990-8900

国家科技图书文献中心

摘要：The utilisation of particle flow code to | nature of the particle action mechanism within the | establish discrete element models represents an effective | approach for addressing the issue of discontinuous media | . This methodology has been employed by numerous

关键词： Discrete element method (DEM) | Particle flow code (PFC) | Orthogonal design | Back propagation (BP) Neural network

摘要：Preexisting fissures are common in rock mass | engineering, and these preexisting fissures can considerably | reduce the strength of rock masses and the stability of | rock mass engineering. Considering that the | preexisting fissures are not straight, a DEM numerical

关键词： Rough joints | Numerical simulation | JRC value | Peak strength

摘要： experiments, and particle flow code (PFC) software modeled | Understanding the failure process in | surrounding rocks is essential for assessing the stability | of underground spaces and predicting potential | disasters. Although failure patterns around openings of

关键词： Underground opening | Flaws | Excavation damage zone | Acoustic emission | Particle Flow Code

摘要： different flaw dip angles. Additionally, the Particle Flow | Code program was used to analyze the propagation of | The process of exposing stratified cemented | tailings backfill (SCTB) underground is prone to damage | due to blasting disturbances. To investigate the

关键词： Cemented tailings backfill | Stratified surfaces | Prefabricated flaw | Particle Flow Code | Failure characteristics

摘要：Nonpersistent joints are prevalent in | engineering rock masses and are sensitive to cyclic loads | induced by geological movements and engineering | disturbances. Therefore, studying the fatigue mechanisms of | rock masses with nonpersistent joints under cyclic

关键词： cyclic load | fatigue responses | nonpersistent jointed rock | particle flow code

摘要： fissure red sandstone specimens. Then, particle flow | ABSTRACT In order to reveal the influence of | double arc‐shaped fissure dip angles on the macro‐micro | failure and energy evolution laws of rock masses, a | numerical model of red sandstone was firstly established

关键词： constitutive model | crack propagation | dissipative energy | double arc‐shaped fissure | particle flow code

摘要：In cemented paste backfill (CPB), the | connection mode and spatial position arrangement of | particles determine the deformation, structural strength | and stability of the backfill. Based on the scanning | electron microscope images of CPB, the representative

关键词： Cemented paste backfill | Digital image processing | Particle flow code method | Microscopic parameters

摘要：Before the discrete element method (DEM) is | implemented for numerical simulations, the microparameters | of the DEM models should be calibrated | . Microparameter calibration is a critically important procedure | for numerical DEM simulations. The macroparameters

关键词： DEM (discrete element method) | Microparameter calibration | Particle flow code (PFC) | Stress-strain curve | AEO (artificial ecosystem-based optimization) algorithm

摘要： employing PFC(Particle Flow Code) software, the | permeability of particle-pore media. Utilising the spatial | random convexity growth algorithm, soil particle models | particle size and permeability coefficient was 0.82 | , which was dominant. The particle size mainly affects

关键词： Permeability | Soil porous media | Sphericity | Parking model

摘要：, this paper adopts the particle flow code (PFC3D) to | effects of seepage flow and cementation content on | results show that: () smaller seepage flow has less | Poissons ratio decreased with increasing seepage flow | the seepage flow rate is low, while it generally

关键词： Xiyu conglomerate | Cemented material | Seepage-flow coupling effect | Discrete element | Deformation and failure characteristics

4008-161-200 800-990-8900

国家科技图书文献中心

摘要：The utilisation of particle* flow code to* | nature of the particle* action mechanism within the* | establish discrete element models represents an effective | approach for addressing the issue of discontinuous media | . This methodology has been employed by numerous

摘要： experiments, and particle* flow code (PFC) software modeled* | Understanding the failure process in | surrounding rocks is essential for assessing the stability | of underground spaces and predicting potential | disasters. Although failure patterns around openings of

摘要： employing PFC(Particle* Flow Code) software, the | permeability of particle-pore media. Utilising the spatial | random convexity growth algorithm, soil particle models* | particle size and permeability coefficient was 0.82 | , which was dominant. The particle* size mainly affects*

摘要：, this paper adopts the particle* flow code (PFC3D) to* | effects of seepage flow* and cementation content on* | results show that: () smaller seepage flow* has less* | Poissons ratio decreased with increasing seepage flow | the seepage flow* rate is low, while it generally*