Temat: micro-polar hypoplasticity - Katalog OPAC zbiorów

Skocz do pozycji: 1.

Tytuł:: Effect of Grain Crushing on Shear Localization in Granular Bodies within Micro-Polar Hypoplasticity
Autorzy:: Tejchman, J.
Powiązania:: https://bibliotekanauki.pl/articles/241516.pdf
Data publikacji:: 2010
Wydawca:: Polska Akademia Nauk. Instytut Budownictwa Wodnego PAN
Tematy:: breakage mechanics
grain crushing
micro-polar hypoplasticity
sand
shearing
Opis:: The paper deals with the effect of grain crushing on shear localization in granular materials in an infinite long narrow granular strip under constant vertical pressure. The calculations were carried out with an enhanced micro-polar hypoplastic constitutive model which is able to describe the salient properties of crushable granular bodies including shear localization. The change of the mean grain diameter with varying pressure was taken into account with the help of formulae from breakage mechanics. The effect of pressure and initial void ratio on shear localization was studied.
Źródło:: Archives of Hydro-Engineering and Environmental Mechanics; 2010, 57, 1; 3-30
1231-3726
Pojawia się w:: Archives of Hydro-Engineering and Environmental Mechanics
Dostawca treści:: Biblioteka Nauki

Artykuł

Zmień widok

na półce

Skocz do pozycji: 2.

Tytuł:: Size Effects in Problems of Footings on Sand within Micro-Polar Hypoplasticity
Autorzy:: Tejchman, J.
Górski, J.
Powiązania:: https://bibliotekanauki.pl/articles/241079.pdf
Data publikacji:: 2008
Wydawca:: Polska Akademia Nauk. Instytut Budownictwa Wodnego PAN
Tematy:: footing
micro-polar hypoplasticity
sand
shear localization
size effect
stratified sampling
void ratio
Opis:: Numerical FE investigations of size effects in problems of footings on sand were performed. Micro-polar hypoplastic constitutive model was used to describe a mechanical behaviour of a cohesionless granular material during a monotonic deformation path. The FE analyses were carried out with three different footing widths. In deterministic calculations, a uniform distribution of initial void ratio was used. In statistical calculations, initial void ratios took the form of random spatial fields described by a truncated Gaussian random distribution. In order to reduce the number of stochastic realizations without sacrificing the accuracy of the calculations, a stratified sampling method was applied. The numerical results were compared with corresponding laboratory tests by Tatsuoka et al (1997). The numerical results show that the bearing capacity of footings decreases with increasing specimen size. If the initial void ratio is stochastically distributed, the mean bearing capacity of footings may be larger than the deterministic value. The statistical size effect is smaller than the deterministic one.
Źródło:: Archives of Hydro-Engineering and Environmental Mechanics; 2008, 55, 3-4; 95-124
1231-3726
Pojawia się w:: Archives of Hydro-Engineering and Environmental Mechanics
Dostawca treści:: Biblioteka Nauki

Artykuł

Zmień widok

na półce

Informacja

Wyszukujesz frazę "micro-polar hypoplasticity" wg kryterium: Temat

Źródło danych

Dostawca treści

Kolekcja

Rok wydania

Wydawca

Temat

Autor

Typ dokumentu

Język