Temat: local model - Katalog OPAC zbiorów

Skocz do pozycji: 1.

Tytuł:: A Non-local hypoplastic constitutive law to describe shear localisation in granular bodies
Autorzy:: Tejchman, J.
Powiązania:: https://bibliotekanauki.pl/articles/240962.pdf
Data publikacji:: 2003
Wydawca:: Polska Akademia Nauk. Instytut Budownictwa Wodnego PAN
Tematy:: characteristic length
finite element method
non-local model
plane strain compression
shear localization
Opis:: The paper presents a FE-analysis of shear localisation in granular bodies by a finite element method based on a hypoplastic constitutive law. The law can reproduce essential features of granular bodies depending on the void ratio, pressure level and deformation direction. To realistically simulate the formation of a spontaneous shear zone inside cohesionless sand during plane strain compression, a hypoplastic constitutive law was extended by non-local terms. The effects of initial void ratio, pressure level and a characteristic length on the thickness of an interior shear zone were shown. The numerical results were compared with corresponding laboratory tests.
Źródło:: Archives of Hydro-Engineering and Environmental Mechanics; 2003, 50, 4; 359-379
1231-3726
Pojawia się w:: Archives of Hydro-Engineering and Environmental Mechanics
Dostawca treści:: Biblioteka Nauki

Artykuł

Skocz do pozycji: 2.

Tytuł:: Modelling of concrete behaviour with a non-local continuum damage approach
Autorzy:: Bobiński, J.
Tejchman, J.
Powiązania:: https://bibliotekanauki.pl/articles/241347.pdf
Data publikacji:: 2005
Wydawca:: Polska Akademia Nauk. Instytut Budownictwa Wodnego PAN
Tematy:: characteristic length
concrete
crack
damage model
FEM
non-local theory
Opis:: The paper presents FE-results on the behaviour of concrete under plane strain conditions. The material was modelled using a simple isotropic damage continuum model. The model was enriched by non-local terms to avoid a pathological mesh-sensitivity and to obtain a well-posed rate boundary value problem. The constitutive model was used to simulate localization of deformation in 3 benchmark problems: a double-edge notched specimen under uniaxial tension and a notched beam under three- and four-point bending. Attention was laid on the effect of a characteristic length on the load-displacement curves and strain localization. The FE-results were compared with experiments and other numerical studies.
Źródło:: Archives of Hydro-Engineering and Environmental Mechanics; 2005, 52, 3; 243-263
1231-3726
Pojawia się w:: Archives of Hydro-Engineering and Environmental Mechanics
Dostawca treści:: Biblioteka Nauki

Artykuł

Skocz do pozycji: 3.

Tytuł:: Local scour in non-uniform bed material below a horizontal solid apron
Autorzy:: Zawadzki, P.
Błażejewski, R.
Powiązania:: https://bibliotekanauki.pl/articles/240972.pdf
Data publikacji:: 2001
Wydawca:: Polska Akademia Nauk. Instytut Budownictwa Wodnego PAN
Tematy:: two-dimensional mathematical model
local scour
horizontal solid
non-uniform bed material
Opis:: A two-dimensional mathematical model of local scour in non-uniform non-cohesive soil below a horizontal solid apron is presented. The model parameters were identified on the basis of own experimental laboratory data. Verification of the model, accomplished using other laboratory data, showed fairly good conformity, however, additional verification under field conditions is needed.
Źródło:: Archives of Hydro-Engineering and Environmental Mechanics; 2001, 48, 1; 3-17
1231-3726
Pojawia się w:: Archives of Hydro-Engineering and Environmental Mechanics
Dostawca treści:: Biblioteka Nauki

Artykuł

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