Abstract
In this work, we will consider a half-space filled with an elastic material, which has constant elastic parameters. The governing equations are taken in the context of the theory generalized thermoelasticity. A linear temperature ramping function is used to more realistically model thermal loading of the half-space surface. The medium is assumed initially quiescent and subjected to moving heat source with constant velocity in one direction. Laplace and Fourier transform techniques are used to obtaining the general solution for any set of boundary conditions. The inverse Laplace and Fourier transforms are computed numerically using a method based on Fourier expansion techniques. Some comparisons have been shown in figures to estimate the effect of the ramping parameter of heating and the velocity of the heat source.
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Abbreviations
- λ, μ:
-
Lame’s constants
- ρ:
-
Density
- CE :
-
Specific heat at constant strain
- t:
-
Time
- T:
-
Temperature
- To :
-
Reference temperature
- θ:
-
Dynamical temperature
- αT :
-
Coefficient of linear thermal expansion
- γ:
-
α T (3λ + 2μ)
- σij :
-
Components of stress tensor
- eij :
-
Components of strain tensor
- ui = (u, v, w):
-
Displacement vector
- Fi :
-
Body force vector
- K:
-
Thermal conductivity
- τo :
-
Relaxation time
- t 0 :
-
Ramping parameter
- i, j = 1, 2, 3:
-
Indicate the reference axis
- \( c_{o} = \sqrt {\frac{\lambda + 2\,\mu }{\rho }} \) :
-
Longitudinal waves speed
- \( \eta = \frac{{\rho \,C_{E} }}{K} \) :
-
The thermal viscosity
- \( \varepsilon = \frac{{\gamma^{2} {\text{T}}_{\text{o}} \,}}{{\rho \,{\text{C}}_{\text{E}} \,(\lambda + 2\mu )}} \) :
-
Dimensionless thermoelastic coupling constant
- β:
-
\( \left( {\frac{\lambda + 2\mu }{\mu }} \right)^{{{\raise0.7ex\hbox{$1$} \!\mathord{\left/ {\vphantom {1 2}}\right.\kern-0pt} \!\lower0.7ex\hbox{$2$}}}} \)
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Acknowledgement
The authors wish to acknowledge the approval and the support of this research study by the grant No. 5–38–1436–5 from the Deanship of Scientific Research in Northern Border University, Arar, KSA.
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Amin, M.M., El-Bary, A.A. & Youssef, H.M. Two-dimensional problem of generalized thermoelastic half-space subjected to moving heat source. Microsyst Technol 23, 4611–4617 (2017). https://doi.org/10.1007/s00542-017-3281-4
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DOI: https://doi.org/10.1007/s00542-017-3281-4