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Wyszukujesz frazę "dynamic behavior" wg kryterium: Temat

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    Wyświetlanie 1-6 z 6
    Tytuł:
    Dynamic behavior of the building envelope: theoretical predictions and experimental analysis
    Autorzy:
    Baratieri, M.
    Prada, A.
    Gasparella, A.
    Baggio, P.
    Powiązania:
    https://bibliotekanauki.pl/articles/362561.pdf
    Data publikacji:
    2009
    Wydawca:
    Instytut Fizyki Budowli Katarzyna i Piotr Klemm
    Tematy:
    zachowanie się dynamiczne składników
    component dynamic behavior
    CTF
    Opis:
    In the present paper the comparison between the results obtained from an extended series of numerical simulations on a composite wall and the experimental data collected in transient regime are presented. The experimental analysis is applied to a building of the University of Trento. The numerical simulations have been carried out using the standard EN ISO 13786 [1], the transfer functions method and also solving the heat equation by means of the discretization based on the finite element method.
    Źródło:
    Fizyka Budowli w Teorii i Praktyce; 2009, T. 4; 5-10
    1734-4891
    Pojawia się w:
    Fizyka Budowli w Teorii i Praktyce
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Consideration of the uncertainty in the dimensioning of a gearbox of a wind turbine
    Autorzy:
    Trabelsi, Hassen
    Guizani, Amir
    Barkallah, Maher
    Hammadi, Moncef
    Hadrich, Ayman
    Powiązania:
    https://bibliotekanauki.pl/articles/1839690.pdf
    Data publikacji:
    2021
    Wydawca:
    Polskie Towarzystwo Mechaniki Teoretycznej i Stosowanej
    Tematy:
    uncertainty
    interval computation
    Finite Element Method
    truss
    dynamic behavior
    gearbox
    Opis:
    The paper deals with the design approach of a subdefinite mechatronic system and focuses on the sizing stage of a gearbox of a wind turbine based on the interval computation method. Indeed, gearbox design variables are expressed by intervals to take into account the uncertainty in the estimation of these parameters. The application of the interval computation method allows minimizing the number of simulations and enables obtaining a set of solutions instead of a single one. The dynamic behavior of the gearbox is obtained using the finite element method. The challenge here is to get convergent results with intervals that reflect the efficiency of the applied method. Thus, several mathematical formulations have been tested in static study and evaluated in the case of a truss. Then the interval computation method was used to simulate the behavior of the wind turbine gearbox.
    Źródło:
    Journal of Theoretical and Applied Mechanics; 2021, 59, 1; 67-79
    1429-2955
    Pojawia się w:
    Journal of Theoretical and Applied Mechanics
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    ATiPreTA: An analytical model for time-dependent prediction of terrorist attacks
    Autorzy:
    Kebir, Oussama
    Nouaouri, Issam
    Rejeb, Lilia
    Ben Said, Lamjed
    Powiązania:
    https://bibliotekanauki.pl/articles/2172121.pdf
    Data publikacji:
    2022
    Wydawca:
    Uniwersytet Zielonogórski. Oficyna Wydawnicza
    Tematy:
    terrorist attack
    attack classification
    mathematical modeling
    dynamic behavior simulation
    damage prediction
    atak terrorystyczny
    klasyfikacja ataku
    model matematyczny
    przewidywanie szkód
    Opis:
    In counter-terrorism actions, commanders are confronted with difficult and important challenges. Their decision-making processes follow military instructions and must consider the humanitarian aspect of the mission. In this paper, we aim to respond to the question: What would the casualties be if governmental forces reacted in a given way with given resources? Within a similar context, decision-support systems are required due to the variety and complexity of modern attacks as well as the enormous quantity of information that must be treated in real time. The majority of mathematical models are not suitable for real-time events. Therefore, we propose an analytical model for a time-dependent prediction of terrorist attacks (ATiPreTA). The output of our model is consistent with casualty data from two important terrorist events known in Tunisia: Bardo and Sousse attacks. The sensitivity and experimental analyses show that the results are significant. Some operational insights are also discussed.
    Źródło:
    International Journal of Applied Mathematics and Computer Science; 2022, 32, 3; 495--510
    1641-876X
    2083-8492
    Pojawia się w:
    International Journal of Applied Mathematics and Computer Science
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Numerical study of dynamic behaviors of concrete under various strain rates
    Autorzy:
    An, H. M.
    Liu, L.
    Powiązania:
    https://bibliotekanauki.pl/articles/230844.pdf
    Data publikacji:
    2019
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    zachowanie dynamiczne
    beton
    model Holmquist-Johnson-Cook
    HJC
    pasek ciśnienia Hopkinsona rozdzielony
    SHPB
    pęknięcie
    podział
    dynamic behavior
    concrete
    Holmquist-Johnson-Cook model
    split Hopkinson pressure bar
    fracture
    fragmentation
    Opis:
    As the dynamic behavior of the concrete is different from that under static load, this research focuses on the study of dynamic responses of concrete by simulating the split Hopkinson pressure bar (SHPB) test. Finite element code LS-DYNA is used for modeling the dynamic behaviors of concrete. Three continuous models are reviewed and the Holmquist-Johnson-Cook model (HJC) is introduced in detail. The HJC model which has been implemented in LS-DYNA is used to represent the concrete properties. The SHPB test model is established and a few stress waves are applied to the incident bar to simulate the dynamic concrete behaviors. The stress-strain curves are obtained. The stress distributions are analyzed. The crack initiation and propagation process are described. It is concluded that: the HJC model can modeling the entire process of the fracture initiation and fragmentation; the compressive of the concrete is significantly influenced by the strain rates.
    Źródło:
    Archives of Civil Engineering; 2019, 65, 4; 21-36
    1230-2945
    Pojawia się w:
    Archives of Civil Engineering
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    The asymptotic properties of the dynamic equation with a delayed argument
    Autorzy:
    Cermak, J.
    Urbanek, M.
    Powiązania:
    https://bibliotekanauki.pl/articles/255924.pdf
    Data publikacji:
    2006
    Wydawca:
    Akademia Górniczo-Hutnicza im. Stanisława Staszica w Krakowie. Wydawnictwo AGH
    Tematy:
    dynamic equation
    time scale
    asymptotic behavior
    Opis:
    In this paper, we present some asymptotic results related to the scalar dynamic equation with a delayed argument. Using the time scale calculus we generalize some results known in the differential and difference case to the more general dynamie case.
    Źródło:
    Opuscula Mathematica; 2006, 26, 3; 421-429
    1232-9274
    2300-6919
    Pojawia się w:
    Opuscula Mathematica
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Effect of Nitrogen on the Dynamic Recrystallization Behaviors of Vanadium and Titanium Microalloyed Steels
    Autorzy:
    Baochun, Z.
    Tan, Z.
    Guiyan, L.
    Qiang, L.
    Powiązania:
    https://bibliotekanauki.pl/articles/353138.pdf
    Data publikacji:
    2018
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    vanadium titanium and nitrogen microalloyed steels
    dynamic recrystallization
    effect of nitrogen
    critical strain
    hot deformation behavior
    Opis:
    The hot deformation behaviors of vanadium and titanium microalloyed steels containing different nitrogen contents were studied by performing hot compression tests at various temperatures ranging from 900 to 1050°C and strain rates ranging from 0.1 to 10 s-1. The flow stress curves of the experimental steels were analyzed and the effect of nitrogen on the hot deformation behaviors of the vanadium titanium and nitrogen microalloyed steels was discussed. The results reveal that the flow stress increases with increasing nitrogen addition and the critical strain for the onset of dynamic recrystallization(DRX) also increases by adding nitrogen. Therefore, larger strain should be applied to start DRX in the experimental steel containing higher nitrogen content. The material constants and activation energies for hot deformation were determined by regression method and the effect of nitrogen on the activation energy was also discussed referring to the activation energies from the previous researches. It is found that higher nitrogen content contributes to higher activation energy for hot deformation. Furthermore, the DRX kinetics models for the experimental steels were constructed by regression method and the effect of nitrogen on the DRX rate under various deformation conditions was analyzed. And the inhibition of DRX by increasing nitrogen content is confirmed.
    Źródło:
    Archives of Metallurgy and Materials; 2018, 63, 1; 379-386
    1733-3490
    Pojawia się w:
    Archives of Metallurgy and Materials
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
      Wyświetlanie 1-6 z 6

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