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Wyszukujesz frazę "Abouelregal, A. E." wg kryterium: Autor

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    Wyświetlanie 1-6 z 6
    Tytuł:
    Thermoelastic problem of an axially moving microbeam subjected to an external transverse excitation
    Autorzy:
    Abouelregal, A. E.
    Zenkour, A. M.
    Powiązania:
    https://bibliotekanauki.pl/articles/279181.pdf
    Data publikacji:
    2015
    Wydawca:
    Polskie Towarzystwo Mechaniki Teoretycznej i Stosowanej
    Tematy:
    thermoelasticity
    microbeam
    sinusoidal pulse heating
    axially moving
    transverse excitation
    Opis:
    In this study, the problem of an axially moving microbeam subjected to sinusoidal pulse heating and an external transverse excitation is solved. The generalized thermoelasticity theory with one relaxation time is used to solve this problem. An analytical technique based on the Laplace transform is used to calculate the vibration of deflection and the temperature. The inverse of Laplace transforms are computed numerically using Fourier expansion techniques. The effects of the pulse-width of thermal vibration, moving speed and the transverse excitation are studied and discussed on the lateral vibration, temperature, displacement and bending moment of the beam.
    Źródło:
    Journal of Theoretical and Applied Mechanics; 2015, 53, 1; 167-178
    1429-2955
    Pojawia się w:
    Journal of Theoretical and Applied Mechanics
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Generalized thermoelastic interactions due to an inclined load at a two-temperature half-space
    Autorzy:
    Abouelregal, A. E.
    Zenkour, A. M.
    Powiązania:
    https://bibliotekanauki.pl/articles/279661.pdf
    Data publikacji:
    2016
    Wydawca:
    Polskie Towarzystwo Mechaniki Teoretycznej i Stosowanej
    Tematy:
    thermoelasticity
    conductive and thermodynamic temperatures
    half-space
    inclined load
    Opis:
    The article presents a two-temperature theory to study the thermally insulated stress-free surface of a thermoelastic solid half-space due to an inclined load. The inclined load is a linear combination of a normal load and a tangential load. The normal mode analysis has been employed to solve the present problem. Variations of conductive and thermodynamic temperatures, displacements, and stresses distributions with the horizontal distance have been presented graphically. Some comparisons have been made to estimate the effects due to the two-temperature parameter and the inclination angle on the field quantities. Results of earlier works have been deduced from the present investigation as special cases.
    Źródło:
    Journal of Theoretical and Applied Mechanics; 2016, 54, 3; 827-838
    1429-2955
    Pojawia się w:
    Journal of Theoretical and Applied Mechanics
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Thermoelastic response of nanobeam resonators subjected to exponential decaying time varying load
    Autorzy:
    Abouelregal, A. E.
    Zenkour, A. M.
    Powiązania:
    https://bibliotekanauki.pl/articles/949293.pdf
    Data publikacji:
    2017
    Wydawca:
    Polskie Towarzystwo Mechaniki Teoretycznej i Stosowanej
    Tematy:
    thermoelasticity
    nonlocal nanobeam
    varying load
    ramp-type heating
    Opis:
    This work investigates the vibrational response of thermoelastic nanobeam resonators induced by ramp-type heating and subjected to exponential decaying time varying load via Euler-Bernoulli beam theory. Governing equations are derived in the context of nonlocal generalized thermoelasticity theory with dual phase lags. The nonlocal nanobeam theory incorporates a nonlocal parameter to capture the small scale effect. Using the Laplace transform technique, an analytical solution has been attained. and inversions of the transformed solutions have been carried out by means of calculus of residues. The effects of nonlocal, point load and ramping-time parameters on all studied fields of the nanobeam are investigated and discussed.
    Źródło:
    Journal of Theoretical and Applied Mechanics; 2017, 55, 3; 937-948
    1429-2955
    Pojawia się w:
    Journal of Theoretical and Applied Mechanics
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Magnetothermoelastic vibrations on a viscoelastic microbeam subjected to a laser heat source
    Autorzy:
    Abouelregal, A. E.
    Zenkour, A. M.
    Powiązania:
    https://bibliotekanauki.pl/articles/38614523.pdf
    Data publikacji:
    2021
    Wydawca:
    Instytut Podstawowych Problemów Techniki PAN
    Tematy:
    thermoviscoelasticity
    microbeams
    laser pulse
    magnetic field
    Opis:
    The linear theory of viscoelasticity remains an important field of research like most solids and polymer materials when exposed to a vicious dynamic loading effect. This article introduces a new model for describing the behavior of thermoviscoelastic microbeams considering the effects of temperature change and the longitudinal magnetic field. The governing equations in this model are derived based on the Euler–Bernoulli beam theory, Kelvin–Voigt model of viscosity, the generalized thermoelasticity, and the classical Maxwell equations. The two ends of the microbeam are clamped and subjected to the influence of a laser pulse with a temporal intensity profile. The analytical solutions to the physical fields are evaluated using the Laplace transform and its inversion transforms are performed numerically. The thermo-viscoelastic responses of the microbeam are calculated numerically and investigated graphically. The effect of different parameters such as viscosity, laser intensity, and the magnitude of the magnetic field are studied in detail.
    Źródło:
    Archives of Mechanics; 2021, 73, 1; 3-26
    0373-2029
    Pojawia się w:
    Archives of Mechanics
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    The effect of pulsed laser radiation on a thermoviscoelastic semi-infinite solid under two-temperature theory
    Autorzy:
    Othman, M. I.
    Abouelregal, A. E. E.
    Powiązania:
    https://bibliotekanauki.pl/articles/240353.pdf
    Data publikacji:
    2017
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    generalized thermo-visco-elasticity
    two-temperature
    Non-Gaussian laser pulse
    laser intensity
    phase lags
    Kelvin-Voigt model
    termolepkosprężystość
    dwustopniowy
    niegaussowski impuls laserowy
    intensywność lasera
    model Kelvina-Voigta
    Opis:
    The purpose of this paper is to study the thermoviscoelastic interactions in a homogeneous, isotropic semi-infinite solid under two-temperature theory with heat source. The Kelvin-Voigt model of linear viscoelasticity which describes the viscoelastic nature of the material is used. The bounding plane surface of the medium is subjected to a non-Gaussian laser pulse. The generalized thermoelasticity theory with dual phase lags model is used to solve this problem. Laplace transform technique is used to obtain the general solution for a suitable set of boundary conditions. Some comparisons have been shown in figures to estimate the effects of the phase lags, viscosity, temperature discrepancy, laser-pulse and the laser intensity parameters on all the studied fields. A comparison was also made with the results obtained in the case of one temperature thermoelasticity theory.
    Źródło:
    Archives of Thermodynamics; 2017, 38, 3; 77-99
    1231-0956
    2083-6023
    Pojawia się w:
    Archives of Thermodynamics
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Thermoelastic Interactions in a Rotating Infinite Orthotropic Elastic Body with a Cylindrical Hole and Variable Thermal Conductivity
    Autorzy:
    Mashat, D. S.
    Zenkour, A. M.
    Abouelregal, A. E.
    Powiązania:
    https://bibliotekanauki.pl/articles/139602.pdf
    Data publikacji:
    2017
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    thermoelasticity
    phase lags
    rotation
    orthotropic body
    cylindrical hole
    variable thermal conductivity
    termoelastyczność
    opóźnienia fazowe
    obrót
    ciało ortotropowe
    otwór cylindryczny
    zmienna przewodność cieplna
    Opis:
    In the present article, we introduced a new model of the equations of generalized thermoelasticity for unbounded orthotropic body containing a cylindrical cavity. We applied this model in the context of generalized thermoelasticity with phase-lags under the effect of rotation. In this case, the thermal conductivity of the material is considered to be variable. In addition, the cylinder surface is traction free and subjected to a uniform unit step temperature. Using the Laplace transform technique, the distributions of the temperature, displacement, radial stress and hoop stress are determined. A detailed analysis of the effects of rotation, phase-lags and the variability thermal conductivity parameters on the studied fields is discussed. Numerical results for the studied fields are illustrated graphically in the presence and absence of rotation.
    Źródło:
    Archive of Mechanical Engineering; 2017, LXIV, 4; 481-498
    0004-0738
    Pojawia się w:
    Archive of Mechanical Engineering
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
      Wyświetlanie 1-6 z 6

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