Autor: Tejchman, J - Katalog OPAC zbiorów

Skocz do pozycji: 1.

Tytuł:: Application of a cellular automata model to granular flow
Autorzy:: Kozicki, J.
Tejchman, J.
Powiązania:: https://bibliotekanauki.pl/articles/1986936.pdf
Data publikacji:: 2002
Wydawca:: Politechnika Gdańska
Tematy:: cellular automata
granular flow
silo
passive state
active state
Opis:: Paper presents the results of simulations of granular flow with a cellular automata model. Flow of granular material behind a moving retaining wall and in a silo with inserts was numerically analysed. Two different migration schemes during flow were assumed. Advantages and limits of the model were outlined.
Źródło:: TASK Quarterly. Scientific Bulletin of Academic Computer Centre in Gdansk; 2002, 6, 3; 429-436
1428-6394
Pojawia się w:: TASK Quarterly. Scientific Bulletin of Academic Computer Centre in Gdansk
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 2.

Tytuł:: Simulations of flow patterns in silos with a cellular automaton: Part 2
Autorzy:: Kozicki, J.
Tejchman, J.
Powiązania:: https://bibliotekanauki.pl/articles/1965144.pdf
Data publikacji:: 2005
Wydawca:: Politechnika Gdańska
Tematy:: cellular automation
collisions
density wave
granular flow
flow pattern
silo
Opis:: An improved cellular automaton has been used to calculate the kinematics of non-cohesive granular materials during confined flow in mass and funnel flow model silos. In this model, based on a gas model of hydrodynamics, collisions and dissipation of particles were taken into account during granular flow. The model allowed for investigations of dilatant zones in granular material during silo flow.
Źródło:: TASK Quarterly. Scientific Bulletin of Academic Computer Centre in Gdansk; 2005, 9, 1; 103-114
1428-6394
Pojawia się w:: TASK Quarterly. Scientific Bulletin of Academic Computer Centre in Gdansk
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 3.

Tytuł:: Simulations of flow patterns in silos with a cellular automaton: Part 1
Autorzy:: Kozicki, J.
Tejchman, J.
Powiązania:: https://bibliotekanauki.pl/articles/1965146.pdf
Data publikacji:: 2005
Wydawca:: Politechnika Gdańska
Tematy:: cellular automation
granular flow
flow pattern
insert
silo
Opis:: A simplified cellular automaton was used to calculate the kinematics of non-cohesive granular materials during confined flow in silos. In this model, granular flow was assumed to be an upward propagation of holes through a lattice composed of cells representing single particles. Calculations were carried out with different silo shapes and inserts, transition probabilities, migration rules, outflow schemes, grid types, wall roughness and cell numbers. To visualize the calculation process, horizontal layers of various shades were introduced. The simulation results were compared with laboratory tests in model silos.
Źródło:: TASK Quarterly. Scientific Bulletin of Academic Computer Centre in Gdansk; 2005, 9, 1; 81-102
1428-6394
Pojawia się w:: TASK Quarterly. Scientific Bulletin of Academic Computer Centre in Gdansk
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 4.

Tytuł:: Experimental investigations of strain localization in concrete using Digital Image Correlation (DIC) technique
Autorzy:: Kozicki, J.
Tejchman, J.
Powiązania:: https://bibliotekanauki.pl/articles/241130.pdf
Data publikacji:: 2007
Wydawca:: Polska Akademia Nauk. Instytut Budownictwa Wodnego PAN
Tematy:: concrete beams
digital image correlation
fracture process zone
strain localization
three-point bending
Opis:: The paper presents results of experimental investigations of strain localization in concrete using a non-destructive method called Digital Image Correlation (DIC) technique. This technique measures surface displacements from digital images. The model tests were carried out with notched concrete specimens under three-point bending. Three different beam sizes and two different concrete mixes were used. During experiments, load--deflection curves and evolution of fracture process zone were determined. The measured size effect in strength was compared with the deterministic size effect law by Bazant (1984) and experimental results by Le Bellégo et al (2003).
Źródło:: Archives of Hydro-Engineering and Environmental Mechanics; 2007, 54, 1; 3-24
1231-3726
Pojawia się w:: Archives of Hydro-Engineering and Environmental Mechanics
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 5.

Tytuł:: Simulations of behaviour of granular bodies using a lattice-gas automaton
Autorzy:: Kozicki, J.
Tejchman, J.
Powiązania:: https://bibliotekanauki.pl/articles/241283.pdf
Data publikacji:: 2005
Wydawca:: Polska Akademia Nauk. Instytut Budownictwa Wodnego PAN
Tematy:: collisions
dissipation
granular flow
gravity
lattice-gas automaton
Opis:: A lattice-gas automaton of hydrodynamics was used to calculate the kinematics of non-cohesive granular materials during 3 different complex two-dimensional problems: granular pile, granular flow in a vertical channel and granular flow in a parallel/converging silo. In the model, collisions and dissipation of particles were taken into account. The simulation results were qualitatively compared with experimental results.
Źródło:: Archives of Hydro-Engineering and Environmental Mechanics; 2005, 52, 1; 21-37
1231-3726
Pojawia się w:: Archives of Hydro-Engineering and Environmental Mechanics
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 6.

Tytuł:: 2D Lattice Model for Fracture in Brittle Materials
Autorzy:: Kozicki, J.
Tejchman, J.
Powiązania:: https://bibliotekanauki.pl/articles/241484.pdf
Data publikacji:: 2006
Wydawca:: Polska Akademia Nauk. Instytut Budownictwa Wodnego PAN
Tematy:: beam
brittle material
discrete method
fracture
lattice model
size effect
Opis:: The numerical simulations show the potential of a lattice discrete approach to model fracture during brittle materials in different two-dimensional quasi-static processes of loading behaviour. The 2D calculations were carried out for brittle specimens subject to uniaxial compression, uniaxial extension and shear. The effect of the specimen size on the global stress-strain diagram during uniaxial tension was also investigated. The advantages and disadvantages of the model were outlined.
Źródło:: Archives of Hydro-Engineering and Environmental Mechanics; 2006, 53, 2; 137-154
1231-3726
Pojawia się w:: Archives of Hydro-Engineering and Environmental Mechanics
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 7.

Tytuł:: Numerical Simulations of Triaxial Test with Sand Using DEM
Autorzy:: Widuliński, Ł.
Kozicki, J.
Tejchman, J.
Powiązania:: https://bibliotekanauki.pl/articles/241337.pdf
Data publikacji:: 2009
Wydawca:: Polska Akademia Nauk. Instytut Budownictwa Wodnego PAN
Tematy:: discrete element model
rolling resistance
sand
triaxial test
Opis:: Numerical simulations of the behaviour of cohesionless sand were carried out using a discrete element method. A drained triaxial test of a homogeneous sand specimen under constant lateral pressure was modelled. To simulate the behaviour of sand, a 3D spherical discrete model YADE was used, enhanced by including rolling resistance in order to take into account grain roughness. Numerical results were directly compared with corresponding laboratory tests. The effects of lateral pressure, initial void ratio and micro-parameters on the global behaviour of sand were investigated.
Źródło:: Archives of Hydro-Engineering and Environmental Mechanics; 2009, 56, 3-4; 149-172
1231-3726
Pojawia się w:: Archives of Hydro-Engineering and Environmental Mechanics
Dostawca treści:: Biblioteka Nauki

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