Temat: distinct element method - Katalog OPAC zbiorów

Skocz do pozycji: 1.

Tytuł:: DEM simulations of quasi-static shear deformation of granular media
Autorzy:: Thornton, C.
Powiązania:: https://bibliotekanauki.pl/articles/1953959.pdf
Data publikacji:: 1998
Wydawca:: Politechnika Gdańska
Tematy:: distinct element method
distinct element method simulations
quasi-static shear deformation
granular media
Opis:: Results are presented of numerically simulated three dimensional quasi-static shear deformation of polydisperse systems of spheres. Results of axisymmetric compression test simulations are reported for both dense and loose systems. The versatility of numerical simulation is demonstrated by presenting results obtained from simulations of general radial deviatoric loading, a constant deviatoric strain test and a multi-axial plane strain test. In all cases, the simulated stress-strain dilation responses are in excellent qualitative agreement with the behaviour of granular materials observed in physical experiments.
Źródło:: TASK Quarterly. Scientific Bulletin of Academic Computer Centre in Gdansk; 1998, 2, 3; 461-472
1428-6394
Pojawia się w:: TASK Quarterly. Scientific Bulletin of Academic Computer Centre in Gdansk
Dostawca treści:: Biblioteka Nauki

Artykuł

Skocz do pozycji: 2.

Tytuł:: Shear band development in modified DEM: importance of couple stress
Autorzy:: Iwashita, K.
Oda, M.
Powiązania:: https://bibliotekanauki.pl/articles/1953963.pdf
Data publikacji:: 1998
Wydawca:: Politechnika Gdańska
Tematy:: shear band development
distinct element method
couple stress
numerical simulation tests
Opis:: Numerical simulation tests were carried out using the distinct element method (DEM) with great interest in how large couple stress is actually generated in a shear band. To do this, the conventional DEM was modified slightly, so that the effect of rolling resistance at contact points can be taken into account (called MDEM). It has been found that MDEM provides a powerful tool in simulating not only the generation of large voids inside a shear band but also the high gradient of particle rotation along the shear band boundaries, in a quite similar manner to those of natural granular soils; and that couple stress, although it is very small, is certainly developed in a consistent manner with the particle relation gradient developed in a shear band.
Źródło:: TASK Quarterly. Scientific Bulletin of Academic Computer Centre in Gdansk; 1998, 2, 3; 443-460
1428-6394
Pojawia się w:: TASK Quarterly. Scientific Bulletin of Academic Computer Centre in Gdansk
Dostawca treści:: Biblioteka Nauki

Artykuł

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