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Application of the expanded distinct element method for the study of crack growth in rock-like materials

Lei YANG, Yujing JIANG, Bo LI, Shucai LI, Yang GAO

Frontiers of Structural and Civil Engineering 2012, Volume 6, Issue 2,   Pages 121-131 doi: 10.1007/s11709-012-0151-0

Abstract: The expanded distinct element method (EDEM) was used to investigate the crack growth in rock-like materialsUniaxial compression experiments were also performed with the artificial rock-like samples to verifytensile stresses and is incapable of providing a comprehensive interpretation for the overall failure of rockand shear secondary cracks) and the coalescence of two cracks due to the growth of wing cracks in the rock

Keywords: expanded distinct element method (EDEM)     crack growth     rock-like material     tensile-shear failure criterion    

Crack evolution of soft–hard composite layered rock-like specimens with two fissures under uniaxial compression

Frontiers of Structural and Civil Engineering 2021, Volume 15, Issue 6,   Pages 1372-1389 doi: 10.1007/s11709-021-0772-2

Abstract: the spatiotemporal evolution characteristics of crack extension of soft and hard composite laminated rockThe effects of different rock combination methods and prefabricated fissures with different orientationsThe test results show that the damage mode of SHCLRM is related to the combination mode of rock layerscharacteristics, and the state of crack development can be inferred from this signal to provide early warning for rock

Keywords: soft−hard composite layered rock mass     double cracks     crack evolution     acoustic emission     digital image    

A Numerical Study of Wave Propagation and Cracking Processes in Rock-Like Material under Seismic Loading Article

Xiaoping Zhang, Qi Zhang, Quansheng Liu, Ruihua Xiao

Engineering 2022, Volume 17, Issue 10,   Pages 140-150 doi: 10.1016/j.eng.2021.09.023

Abstract:

An earthquake is usually followed by a considerable number of aftershocks that play a significant role in earthquake-induced landslides.  During the aftershock, the cracking process in rocks becomes more complex because of the formation of faults. In order to investigate the effects of seismic loading on the cracking processes in a specimen containing a single flaw, a numerical approach based on the bonded-particle model (BPM) was adopted to study the seismic loading applied in two orthogonal directions. The results reveal that no transmission and reflection phenomena were observable in the small specimens (76 mm × 152 mm) because they were considerably smaller than the wavelength of the P-wave. Furthermore, under seismic loading, the induced crack was solely tensile in nature. Repeated axial seismic loading did not induce crack propagation after the first axial seismic loading. Cracks began to propagate only when the seismic loading direction was changed from axial to lateral, and then back to axial, ultimately resulting in the failure of the specimen.

Keywords: Seismic wave     Cyclic loading     Cracking processes     Bonded-particle model    

Influence of soft rock-fill material as dam embankment with central bituminous concrete membrane

Peter TSCHERNUTTER

Frontiers of Structural and Civil Engineering 2011, Volume 5, Issue 1,   Pages 63-70 doi: 10.1007/s11709-010-0016-3

Abstract: This paper demonstrates the difficulties in determining the relevant material parameters for a valuationLaboratory as well as field tests on solid rock-fill material were performed before the beginning ofDuring the construction the properties of the available rock-fill changed from solid to soft materials

Keywords: embankment dam     bituminous concrete membrane     rock-fill material properties     deformation behavior    

Mechanical properties of rock materials with related to mineralogical characteristics and grain size

Wenjuan SUN, Linbing WANG, Yaqiong WANG

Frontiers of Structural and Civil Engineering 2017, Volume 11, Issue 3,   Pages 322-328 doi: 10.1007/s11709-017-0387-9

Abstract: Mechanical properties of rock materials are related to textural characteristics.Textural characteristics of rock materials are influenced by the following factors: mineral composition

Keywords: Mechanical properties     rock material     texture     mineral characteristics    

The Cemented Material Dam: A New, Environmentally Friendly Type of Dam

Jinsheng Jia, Michel Lino, Feng Jin, Cuiying Zheng

Engineering 2016, Volume 2, Issue 4,   Pages 490-497 doi: 10.1016/J.ENG.2016.04.003

Abstract:

The first author proposed the concept of the cemented material dam (CMD) in 2009.The concept covers the cemented sand, gravel, and rock dam (CSGRD), the rockfill concrete (RFC) dam (

Keywords: Cemented material dam (CMD)     Cemented sand,gravel,and rock dam (CSGRD)     Rockfill concrete (RFC) dam     Cementedrockfill dam (CRD)     Cemented soil dam (CSD)     Material properties    

Computational methods for fracture in rock: a review and recent advances

Ali JENABIDEHKORDI

Frontiers of Structural and Civil Engineering 2019, Volume 13, Issue 2,   Pages 273-287 doi: 10.1007/s11709-018-0459-5

Abstract: overview of the most popular state-of-the-art computational methods available for modelling fracture in rockmethods which can be found elsewhere but particularly address their potential in modelling fracture in rockFurthermore, we also address ‘general’ difficulties that may arise for simulating fracture in rock andfractured rock.

Keywords: numerical modelling     method development     rock mechanics     fractured rock     rock fracturing    

Correction to: Effect of undercut on the lower bound stability of vertical rock escarpment using finite

Frontiers of Structural and Civil Engineering doi: 10.1007/s11709-023-0035-5

Abstract: Correction to: Effect of undercut on the lower bound stability of vertical rock escarpment using finite

Keywords: finite element power     stability rock escarpment    

Distinct immune escape and microenvironment between RG-like and pri-OPC-like glioma revealed by single-cell

Frontiers of Medicine doi: 10.1007/s11684-023-1017-7

Abstract: 26 gliomas, we reported their classification into primitive oligodendrocyte precursor cell (pri-OPC)-likeand radial glia (RG)-like tumors and validated it in a public cohort and TCGA glioma.The RG-like tumors exhibited wild-type isocitrate dehydrogenase and tended to carry EGFR mutations, and the pri-OPC-like ones were prone to carrying TP53 mutations.and RG-like glioma-infiltrating lymphocytes, respectively.

Keywords: single-cell RNA-seq     glioma     radial glia     primitive oligodendrocyte precursor cell     immune escape    

Self-sacrificial templating synthesis of flower-like nickel phyllosilicates and its application as high-performance

Frontiers of Chemical Science and Engineering 2022, Volume 16, Issue 4,   Pages 484-497 doi: 10.1007/s11705-021-2074-6

Abstract: The nanocomposites of flower-like nickel phyllosilicate particles incorporated into epoxy resin wereThe flower-like nickel phyllosilicate particles were firstly synthesized using a mild self-sacrificialIt was demonstrated that adequate flower-like nickel phyllosilicate particles dispersed well in the matrixNevertheless, the incorporated flower-like nickel phyllosilicate particles resulted in the continuouslyThis study revealed the giant potential of flower-like particles in preparing high-quality EP nanocomposites

Keywords: nickel phyllosilicate     flow-like structure     mechanical property     thermal stability     tribological performance    

Aspects of rock permeability

Lianyang ZHANG

Frontiers of Structural and Civil Engineering 2013, Volume 7, Issue 2,   Pages 102-116 doi: 10.1007/s11709-013-0201-2

Abstract: Effective evaluation of rock permeability is required in different energy, engineering and environmentalAlthough much research has been conducted on rock permeability, it is still one of the most difficulttasks for practicing rock engineers to accurately determine rock permeability.Based on a comprehensive literature review, this paper outlines the key aspects of rock permeability, and anisotropy of rock permeability.

Keywords: rock     permeability     discontinuity     stress     temperature     scale effect     anisotropy    

Toll-like receptors in innate immunity and infectious diseases

Min-Hao WU, Ping ZHANG, Xi HUANG,

Frontiers of Medicine 2010, Volume 4, Issue 4,   Pages 385-393 doi: 10.1007/s11684-010-0600-x

Abstract: The most studied PRRs are Toll-like receptors (TLRs).

Keywords: Toll-like receptors     innate immunity     infectious disease     inflammation    

interface adhesion factor on the bearing capacity of strip footing placed on cohesive soil overlying rock

Frontiers of Structural and Civil Engineering 2021, Volume 15, Issue 6,   Pages 1494-1503 doi: 10.1007/s11709-021-0768-y

Abstract: The problem related to bearing capacity of footing either on pure soil or on pure rock mass has beenCurrently, no study deals with the bearing capacity of strip footing on a cohesive soil layer overlying rockprogramming, the ultimate bearing capacity of a strip footing located on a cohesive soil overlying rockdifferent values of interface adhesion factor (αcr) between the cohesive soil and rockmass strength parameters of beneath rock mass layer.

Keywords: bearing capacity     soil-rock interface     Hoek−Brown yield criterion     plasticity     limit analysis    

Dispersion of “guava-like” silica/polyacrylate nanocomposite particles in polyacrylate matrix

QI Dongming, YANG Lei, WU Minghua, SHAO Jianzhong, BAO Yongzhong

Frontiers of Chemical Science and Engineering 2008, Volume 2, Issue 2,   Pages 127-134 doi: 10.1007/s11705-008-0033-0

Abstract: A series of “guava-like” silica/polyacrylate nanocomposite particles with close silica content and differentpolyacrylate molded composites and the dispersion mechanism of these silica particles from the “guava-likepolyacrylate onto silica was in a moderate range (ca. 20%–70%), almost all of silica particles in these “guava-like

Keywords: silica/polyacrylate composite     cross-linked network     –70     guava-like     TEM    

Title Author Date Type Operation

Application of the expanded distinct element method for the study of crack growth in rock-like materials

Lei YANG, Yujing JIANG, Bo LI, Shucai LI, Yang GAO

Journal Article

Crack evolution of soft–hard composite layered rock-like specimens with two fissures under uniaxial compression

Journal Article

A Numerical Study of Wave Propagation and Cracking Processes in Rock-Like Material under Seismic Loading

Xiaoping Zhang, Qi Zhang, Quansheng Liu, Ruihua Xiao

Journal Article

Influence of soft rock-fill material as dam embankment with central bituminous concrete membrane

Peter TSCHERNUTTER

Journal Article

Mechanical properties of rock materials with related to mineralogical characteristics and grain size

Wenjuan SUN, Linbing WANG, Yaqiong WANG

Journal Article

The Cemented Material Dam: A New, Environmentally Friendly Type of Dam

Jinsheng Jia, Michel Lino, Feng Jin, Cuiying Zheng

Journal Article

Mercury removal from aqueous solution using petal-like MoS2

Ragini Pirarath, Palani Shivashanmugam, Asad Syed, Abdallah M. Elgorban, Sambandam Anandan, Muthupandian Ashokkumar

Journal Article

Computational methods for fracture in rock: a review and recent advances

Ali JENABIDEHKORDI

Journal Article

Correction to: Effect of undercut on the lower bound stability of vertical rock escarpment using finite

Journal Article

Distinct immune escape and microenvironment between RG-like and pri-OPC-like glioma revealed by single-cell

Journal Article

Self-sacrificial templating synthesis of flower-like nickel phyllosilicates and its application as high-performance

Journal Article

Aspects of rock permeability

Lianyang ZHANG

Journal Article

Toll-like receptors in innate immunity and infectious diseases

Min-Hao WU, Ping ZHANG, Xi HUANG,

Journal Article

interface adhesion factor on the bearing capacity of strip footing placed on cohesive soil overlying rock

Journal Article

Dispersion of “guava-like” silica/polyacrylate nanocomposite particles in polyacrylate matrix

QI Dongming, YANG Lei, WU Minghua, SHAO Jianzhong, BAO Yongzhong

Journal Article