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    Wyświetlanie 1-7 z 7
    Tytuł:
    Time-dependent thermo-elastic creep analysis of thick-walled spherical pressure vessels made of functionally graded materials
    Autorzy:
    Kashkoli, M. D.
    Nejad, M. Z.
    Powiązania:
    https://bibliotekanauki.pl/articles/949351.pdf
    Data publikacji:
    2015
    Wydawca:
    Polskie Towarzystwo Mechaniki Teoretycznej i Stosowanej
    Tematy:
    spherical pressure vessels
    creep
    time-dependent
    thermoelastic
    functionally graded material
    Opis:
    Assuming that the thermo-elastic creep response of the material is governed by Norton’s law and material properties, except Poisson’s ratio, are considered as a function of the radius of the spherical vessel, an analytical solution is presented for calculation of stresses and displacements of axisymmetric thick-walled spherical pressure vessels made of functionally graded materials. This analytical solution could be used to study the time and temperature dependence of stresses in spherical vessels made of functionally graded materials. Creep stresses and displacements are plotted against dimensionless radius and time for different values of the powers of the material properties.
    Źródło:
    Journal of Theoretical and Applied Mechanics; 2015, 53, 4; 1053-1065
    1429-2955
    Pojawia się w:
    Journal of Theoretical and Applied Mechanics
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    On wave propagation in a random micropolar generalized thermoelastic medium
    Autorzy:
    Mitra, M.
    Bhattacharyya, R. K.
    Powiązania:
    https://bibliotekanauki.pl/articles/240685.pdf
    Data publikacji:
    2017
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    waves
    random
    micropolar
    thermoelastic
    propagation
    fale
    przypadkowy
    mikropolar
    termoelastyczny
    propagacja
    Opis:
    This paper endeavours to study aspects of wave propagation in a random generalized-thermal micropolar elastic medium. The smooth perturbation technique conformable to stochastic differential equations has been employed. Six different types of waves propagate in the random medium. The dispersion equations have been derived. The effects due to random variations of micropolar elastic and generalized thermal parameters have been computed. Randomness causes change of phase speed and attenuation of waves. Attenuation coefficients for high frequency waves have been computed. Second moment properties have been briefly discussed with application to wave propagation in the random micropolar elastic medium. Integrals involving correlation functions have been transformed to radial forms. A special type of generalized thermo-mechanical auto-correlation functions has been used to approximately compute effects of random variations of parameters. Uncoupled problem has been briefly outlined.
    Źródło:
    Archives of Thermodynamics; 2017, 38, 2; 21-60
    1231-0956
    2083-6023
    Pojawia się w:
    Archives of Thermodynamics
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Two-dimensional analysis of functionally graded thermoelastic microelongated solid
    Autorzy:
    Sharma, Anchal
    Ailawalia, Praveen
    Powiązania:
    https://bibliotekanauki.pl/articles/27312404.pdf
    Data publikacji:
    2022
    Wydawca:
    Uniwersytet Zielonogórski. Oficyna Wydawnicza
    Tematy:
    stopniowanie funkcjonalne
    termoelastyczność
    odkształcenie
    functionally graded
    thermoelastic
    normal mode analysis
    microelongation
    Opis:
    The present research focuses on two-dimensional deformation in a functionally graded thermoelastic micro-elongated medium. It is supposed that the non-homogeneous properties (thermal and mechanical) of FGM are in the x-direction. The normal mode technique is used to acquire the analytic expression for displacement components, stress, micro-elongation and temperature. The cause and effect relationship of non-homogeneity and physical quantities is shown through graphical results.
    Źródło:
    International Journal of Applied Mechanics and Engineering; 2022, 27, 4; 155--169
    1734-4492
    2353-9003
    Pojawia się w:
    International Journal of Applied Mechanics and Engineering
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    A general study of fundamental solutions in aniotropicthermoelastic media with mass diffusion and voids
    Autorzy:
    Chawla, Vijay
    Kamboj, Deepmala
    Powiązania:
    https://bibliotekanauki.pl/articles/1839675.pdf
    Data publikacji:
    2020
    Wydawca:
    Uniwersytet Zielonogórski. Oficyna Wydawnicza
    Tematy:
    termosprężystość
    dyfuzja masy
    źródło ciepła
    general solution
    fundamental solution
    thermoelastic
    voids
    mass diffusion
    Opis:
    The present paper deals with the study of a fundamental solution in transversely isotropic thermoelastic media with mass diffusion and voids. For this purpose, a two-dimensional general solution in transversely isotropic thermoelastic media with mass diffusion and voids is derived first. On the basis of the obtained general solution, the fundamental solution for a steady point heat source on the surface of a semi-infinite transversely isotropic thermoelastic material with mass diffusion and voids is derived by nine newly introduced harmonic functions. The components of displacement, stress, temperature distribution, mass concentration and voids are expressed in terms of elementary functions and are convenient to use. From the present investigation, some special cases of interest are also deduced and compared with the previous results obtained, which prove the correctness of the present result.
    Źródło:
    International Journal of Applied Mechanics and Engineering; 2020, 25, 4; 22-41
    1734-4492
    2353-9003
    Pojawia się w:
    International Journal of Applied Mechanics and Engineering
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Boundary integral equations for an anisotropic bimaterial with thermally imperfect interface and internal inhomogeneities
    Autorzy:
    Sulym, H.
    Pasternak, I.
    Tomashivskyy, M.
    Powiązania:
    https://bibliotekanauki.pl/articles/970616.pdf
    Data publikacji:
    2016
    Wydawca:
    Politechnika Białostocka. Oficyna Wydawnicza Politechniki Białostockiej
    Tematy:
    bi-material
    imperfect interface
    thermoelastic
    anisotropic
    crack
    thin inclusion
    biomateriał
    materiał termoelastyczny
    termosprężystość
    pęknięcia
    Opis:
    This paper studies a thermoelastic anisotropic bimaterial with thermally imperfect interface and internal inhomogeneities. Based on the complex variable calculus and the extended Stroh formalism a new approach is proposed for obtaining the Somigliana type integral formulae and corresponding boundary integral equations for a thermoelastic bimaterial consisting of two half-spaces with different thermal and mechanical properties. The half-spaces are bonded together with mechanically perfect and thermally imperfect interface, which model interfacial adhesive layers present in bimaterial solids. Obtained integral equations are introduced into the modified boundary element method that allows solving arbitrary 2D thermoelacticity problems for anisotropic bimaterial solids with imperfect thin thermo-resistant interfacial layer, which half-spaces contain cracks and thin inclusions. Presented numerical examples show the effect of thermal resistance of the bimaterial interface on the stress intensity factors at thin inhomogeneities.
    Źródło:
    Acta Mechanica et Automatica; 2016, 10, 1; 66-74
    1898-4088
    2300-5319
    Pojawia się w:
    Acta Mechanica et Automatica
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Weak formulation study for thermoelastic buckling analysis of thick laminated cylindrical shells
    Autorzy:
    Kewei, D.
    Powiązania:
    https://bibliotekanauki.pl/articles/264937.pdf
    Data publikacji:
    2015
    Wydawca:
    Uniwersytet Zielonogórski. Oficyna Wydawnicza
    Tematy:
    weak formulations
    buckling analysis
    laminated cylindrical shells
    thermoelastic
    Hamilton canonical equation
    laminowanie
    równanie Hamiltona
    termoelastyczność
    Opis:
    Weak formulations of mixed state equations of closed laminated cylindrical shells are presented in the Hamilton System. The Hamilton canonical equation of closed cylindrical shell is established. By means of applying the transfer matrix method and taking the advantage of Hamiltonian matrix in the calculation, a unified approach and three-dimensional thermoelastic solutions are obtained for the buckling analysis of closed trick laminated cylindrical shells. All equations of elasticity can be satisfied and all elastic constants can be taken into account. Numerical results are given to compare with those of FEM calculated using SAP5.The principle and method suggested here have clear physical concepts. The equations and boundary conditions proposed in this paper are weakened. The solutions and results given here may serve as a benchmark for other numerical procedures.
    Źródło:
    International Journal of Applied Mechanics and Engineering; 2015, 20, 3; 461-470
    1734-4492
    2353-9003
    Pojawia się w:
    International Journal of Applied Mechanics and Engineering
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Two dimensional deformation of a multilayered thermoelastic half-space due to surface loads and heat source
    Autorzy:
    Vashishth, A. K.
    Rani, K.
    Singh, K.
    Powiązania:
    https://bibliotekanauki.pl/articles/265888.pdf
    Data publikacji:
    2020
    Wydawca:
    Uniwersytet Zielonogórski. Oficyna Wydawnicza
    Tematy:
    źródło ciepła
    obciążenia powierzchniowe
    termoelastyczność
    multilayered half-space
    thermoelastic
    propagator matrix
    surface loads
    heat source
    Opis:
    This article deals with a 2-D problem of quasi-static deformation of a multilayered thermoelastic medium due tovsurface loads and heat source. The propagator matrix is obtained for the multilayered formalism of thermoelastic layers. Analytical solutions, in terms of the displacements, stresses, heat flux and temperature function, are obtained for normal strip and line loads, shear strip and line loads and strip and line heat sources. Numerical computation of the obtained analytical expressions is also done. The effects of layering have been studied. For the verification of the results, results of earlier studies have been obtained as particular cases of the present study.
    Źródło:
    International Journal of Applied Mechanics and Engineering; 2020, 25, 1; 177-197
    1734-4492
    2353-9003
    Pojawia się w:
    International Journal of Applied Mechanics and Engineering
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
      Wyświetlanie 1-7 z 7

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