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    Wyświetlanie 1-3 z 3
    Tytuł:
    Research of lateral force of pipe conveyor belt’s vertical transport section
    Autorzy:
    Wang, S.
    Guo, Y.-C.
    Li, D. Y.
    Hu, K.
    Powiązania:
    https://bibliotekanauki.pl/articles/223504.pdf
    Data publikacji:
    2016
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    pipe belt conveyor
    vertical transport
    lateral force
    discrete element simulation
    experimental verification
    przenośnik taśmowy
    transport pionowy
    siła boczna
    symulacja
    platforma doświadczalna
    Opis:
    In order to release the lateral force of pipe conveyor belt in vertical transportation, the thesis had a study of the lateral force of the conveyor belt. By making use of Janssen Principles and fractal theory, based on reasonable simplification, the author established a mathematical model of the lateral force in vertical transportation, and with the research foundation of the pipe belt conveyor for underground transportation, through solution analysis, the author found out that the change of material diameter would lead to nonlinear variation of the lateral force of the conveyor belt. Under the circumstances of different material diameter, discrete element method was adopted to simulate the lateral force of the conveyor belt, thus working out the distribution curve chart of the lateral force. To verify the reliability of the theory, the author built an experimental platform for pipe conveyor belt in vertical transportation, and experimented with five groups of materials in different diameter, working out the strain of lateral force of the characteristic conveyor belt; by comparing the theoretical result, the simulation result and the experimental result, it showed that the solution to relieving lateral force through optimization selection of material diameter put forward in this thesis was reasonable and effective. It provides theoretical reference for the design of pipe belt conveyor.
    Źródło:
    Archives of Transport; 2016, 37, 1; 67-75
    0866-9546
    2300-8830
    Pojawia się w:
    Archives of Transport
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Numerical investigation of particle separation in a centrifugal air separator
    Autorzy:
    Kaczyński, J.
    Kraft, M.
    Powiązania:
    https://bibliotekanauki.pl/articles/175534.pdf
    Data publikacji:
    2017
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    CFD simulation
    discrete particle model
    particle separation
    Opis:
    This paper presents the modeling approaches and results of numerical investigations into particle separation in a production-scale industrial centrifugal air separator. The gaseous phase was modeled using an Eulerian formulation, while the particle phase was modeled using a Lagrangian particle tracking approach. Two-way coupling between continuous and disperse phase was included and turbulence modeled using the realizable k-ε model. The resulting comprehensive system model provides correct predictions of the power consumption and of pressure losses in the device over the full operation range, and proved ability of accurately predicting the size-dependent particle separation efficiencies down to nominal particle sizes of 2 µm.
    Źródło:
    Transactions of the Institute of Fluid-Flow Machinery; 2017, 135; 57-71
    0079-3205
    Pojawia się w:
    Transactions of the Institute of Fluid-Flow Machinery
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Modelling and Simulation Method for Production Process Automation in Steel Casting Foundry
    Autorzy:
    Kampa, A.
    Gołda, G.
    Powiązania:
    https://bibliotekanauki.pl/articles/380826.pdf
    Data publikacji:
    2018
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    automation in foundry
    robotics in foundry
    transport systems in foundry
    discrete event simulation
    human factors
    overall equipment effectiveness
    automatyzacja w odlewni
    robotyka w odlewni
    systemy transportowe w odlewni
    dyskretna symulacja zdarzenia
    czynniki ludzkie
    ogólna efektywność sprzętowa
    Opis:
    The problem of production flow in steel casting foundry is analysed in this paper. Because of increased demand and market competition, a reorganisation of the foundry process is required, including the elimination of manual labour and the implementation of automation and robotisation of certain processes. The problem is how to determine the real difference in work efficiency between human workers and robots. We show an analysis of the production efficiency of steel casting foundry operated by either human operators or industrial robots. This is a problem from the field of Operations Research for which the Discrete Event Simulation (DES) method is used. Three models are developed, including the foundry before and after automation when taking into consideration parameters of the availability of machines, operators and robots. We apply the OEE (Overall Equipment Effectiveness) indicator to present how the availability, performance and quality parameters influence the foundry’s productivity. In addition, stability of the simulation model was analysed. This approach allows for a better representation of real production processes and the obtained results can be used for further economic analysis.
    Źródło:
    Archives of Foundry Engineering; 2018, 18, 1; 47-52
    1897-3310
    2299-2944
    Pojawia się w:
    Archives of Foundry Engineering
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
      Wyświetlanie 1-3 z 3

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