| Title: | Influence of the virtual strain rate of noncohesive granular media on the discrete element method |
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| Authors: | ID Suzuki, Kiichi (Author)
ID Fakulteta za gradbeništvo, prometno inženirstvo in arhitekturo Univerze v Mariboru (Copyright holder) |
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| Files: |  Acta_geotechnica_Slovenica_2015_Suzuki_Influence_of_the_virtual_strain_rate_of_noncohesive_granular_media_on_the_discrete_element_method.pdf (690,97 KB)
MD5: 54BF052C085AABEE9EF34038FBB219FA
PID: 20.500.12556/dkum/047233d5-6ed4-49b2-a172-fffca940773d
 http://fgserver3.fg.um.si/journal-ags/2015-1/article-2.asp
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| Language: | English |
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| Work type: | Scientific work |
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| Typology: | 1.01 - Original Scientific Article |
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| Organization: | FGPA - Faculty of Civil Engineering, Transportation Engineering and Architecture
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| Abstract: | The discrete element method (DEM) is an alternative computational tool for augmenting laboratory experiments because of its advantages in detailing macro- and micro-mechanical information. However, it should be noted that the DEM does not usually consider the convergence for each time step, because of the necessity for a huge calculation time. In that case, it indicates that the uniqueness of the solution is not guaranteed, except in the case of a very small strain rate, even though the behavior looks qualitatively reasonable. At first, the influence of strain rate among numerically imaginary input parameters for a non-cohesive material was investigated for monotonic, biaxial shear tests. Then, new findings were obtained from the DEM simulations. Strain rate has a significant influence on the shear behavior, especially after the peak strength of dense specimens. A quasi-static steady state exists, not a static steady state. The “strong” fabric ratio is closely related to the stress ratio. The maximum slip coordination number occurs around the phase-transformation ratio and the shear band appears around the peak strength. |
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| Keywords: | discrete element method, DEM, induced anisotropy, quasi-static steady state, strain rate, uniqueness |
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| Publication status: | Published |
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| Publication version: | Version of Record |
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| Year of publishing: | 2015 |
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| Number of pages: | str. 17-24 |
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| Numbering: | Letn. 12, št. 1 |
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| PID: | 20.500.12556/DKUM-70828  |
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| ISSN: | 1854-0171 |
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| UDC: | 550.3:624.131 |
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| ISSN on article: | 1854-0171 |
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| COBISS.SI-ID: | 284321536 |
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| NUK URN: | URN:SI:UM:DK:XFTZNTKB |
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| Copyright: | Fakulteta za gradbeništvo, prometno inženirstvo in arhitekturo Univerze v Mariboru |
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| Publication date in DKUM: | 14.06.2018 |
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| Views: | 1290 |
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| Downloads: | 257 |
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| Metadata: |    |
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| Categories: | Misc.
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