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Discrete element modelling of flexible membrane boundaries for triaxial tests
Qu, Tongming; Feng, Y. T.; Wang, Yong; Wang, Min
2019
Source PublicationCOMPUTERS AND GEOTECHNICS
ISSN0266-352X
Volume115Pages:-
AbstractThe discrete element modelling of triaxial tests plays a critical role in unveiling fundamental properties of particulate materials, but the numerical implementation of a flexible membrane boundary for the testing still imposes problems. In this study, a robust algorithm was proposed to reproduce a flexible membrane boundary in triaxial testing. The equivalence of strain energy enables the particle-scale parameters representing the flexible membrane to be directly determined from the real geometric and material parameters of the membrane. Then the proposed flexible membrane boundary was implemented in the context of discrete element simulation of triaxial testing and was validated with laboratory experiments. Furthermore, comparisons of triaxial tests with flexible and rigid boundaries were performed from macro-scale to meso-scale. The results show that the boundary condition has limited influences on the stress-strain behaviour but a relatively large impact on the volumetric change, the failure mode, the distribution of contact forces, and the fabric evolution of particles in the specimen during triaxial testing.
KeywordDEM Triaxial tests Flexible membrane boundary Strain energy Shear band Fabric evolution
DOI10.1016/j.compgeo.2019.103154
Indexed BySCI
Language英语
WOS Research AreaComputer Science ; Engineering ; Geology
WOS SubjectComputer Science, Interdisciplinary Applications ; Engineering, Geological ; Geosciences, Multidisciplinary
WOS IDWOS:000506718800011
Citation statistics
Cited Times:6[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://119.78.100.198/handle/2S6PX9GI/14826
Collection岩土力学所知识全产出_期刊论文
国家重点实验室知识产出_期刊论文
Affiliation1.Swansea Univ, Coll Engn, Zienkiewicz Ctr Computat Engn, Swansea SA1 8EP, W Glam, Wales;
2.Chinese Acad Sci, Inst Rock & Soil Mech, State Key Lab Geomech & Geotech Engn, Wuhan, Peoples R China;
3.Los Alamos Natl Lab, Theoret Div, T 3 Fluid Dynam & Solid Mech Grp, Los Alamos, NM 87545 USA
Recommended Citation
GB/T 7714
Qu, Tongming,Feng, Y. T.,Wang, Yong,et al. Discrete element modelling of flexible membrane boundaries for triaxial tests[J]. COMPUTERS AND GEOTECHNICS,2019,115:-.
APA Qu, Tongming,Feng, Y. T.,Wang, Yong,&Wang, Min.(2019).Discrete element modelling of flexible membrane boundaries for triaxial tests.COMPUTERS AND GEOTECHNICS,115,-.
MLA Qu, Tongming,et al."Discrete element modelling of flexible membrane boundaries for triaxial tests".COMPUTERS AND GEOTECHNICS 115(2019):-.
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