Temat: thermoelasticity - Katalog OPAC zbiorów

Skocz do pozycji: 1.

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

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Skocz do pozycji: 2.

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

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Skocz do pozycji: 3.

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

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Skocz do pozycji: 4.

Tytuł:: A generalized thermoelastic dual-phase-lagging response of thick beams subjected to harmonically varying heat and pressure
Autorzy:: Zenkour, A. M.
Powiązania:: https://bibliotekanauki.pl/articles/949122.pdf
Data publikacji:: 2018
Wydawca:: Polskie Towarzystwo Mechaniki Teoretycznej i Stosowanej
Tematy:: thermoelasticity
dual-phase-lag model
two-dimensional elasticity solution
Opis:: The generalized thermoelastic problem of a thermo-mechanically loaded beam is studied. The upper surface of the beam is thermally isolated and subjected to a mechanical load while the bottom surface is traction free and subjected to a heating source. Based on the heat conduction equation containing the thermoelastic coupling term and the two-dimensional elasticity theory, thermoelastic coupling differential equations of motion are established. The generalized thermoelasticity theory with the dual-phase-laggings (DPLs) model is used to solve this problem. A closed-form analytical technique is used to calculate vibration of displacements and temperature. The effects of the phase-laggings (PLs), the intensity of the applied load and heat parameters on the field quantities of the beam are discussed. The variation along the axial direction and through-the-thickness distributions of all fields are investigated. Some comparisons have been also shown graphically to estimate the effects of the time on all the studied fields.
Źródło:: Journal of Theoretical and Applied Mechanics; 2018, 56, 1; 15-30
1429-2955
Pojawia się w:: Journal of Theoretical and Applied Mechanics
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 5.

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

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