Abstract
In this work, a novel generalized model of photothermal theory with two-temperature thermoelasticity theory based on memory-dependent derivative (MDD) theory is performed. A one-dimensional problem for an elastic semiconductor material with isotropic and homogeneous properties has been considered. The problem is solved with a new model (MDD) under the influence of a mechanical force with a photothermal excitation. The Laplace transform technique is used to remove the time-dependent terms in the governing equations. Moreover, the general solutions of some physical fields are obtained. The surface taken into consideration is free of traction and subjected to a time-dependent thermal shock. The numerical Laplace inversion is used to obtain the numerical results of the physical quantities of the problem. Finally, the obtained results are presented and discussed graphically.
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Abbreviations
- \(\lambda, \mu\) :
-
Counterparts of Lame’s parameters
- \(N_{0}\) :
-
Equilibrium carrier concentration at temperature \(T\)
- \(\delta_{n}\) :
-
The difference of deformation potential of conduction and valence band, \(\theta = T - T_{0}\) Thermodynamic temperature deviation
- \(\phi = \phi - T_{0}\) :
-
Conductive temperature deviation
- \(a\) :
-
Two-temperature parameter
- \(T\) :
-
Absolute temperature
- \(T_{0}\) :
-
Temperature of the medium in its natural state assumed to be \(|\frac{\theta}{T_{0}} |\ll 1\)
- \(\phi\) :
-
Conductive absolute temperature
- \(\gamma = (3\lambda + 2\mu )\alpha_{T}\) :
-
The volume thermal expansion
- \(\sigma_{ij}\) :
-
Components of the stress tensor
- \(\rho\) :
-
Density of the medium
- \(\alpha_{T}\) :
-
The coefficient of linear thermal expansion
- \(e\) :
-
Cubical dilatation
- \(\tau_{0}\) :
-
Thermal relaxation time
- \(C_{e}\) :
-
Specific heat at constant strain of the solid plate
- \(k\) :
-
The thermal conductivity of the sample
- \(D_{E}\) :
-
The carrier diffusion coefficient
- \(\tau\) :
-
The photogenerated carrier lifetime
- \(E_{g}\) :
-
The energy gap of the semiconductor
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Lotfy, K., Sarkar, N. Memory-dependent derivatives for photothermal semiconducting medium in generalized thermoelasticity with two-temperature. Mech Time-Depend Mater 21, 519–534 (2017). https://doi.org/10.1007/s11043-017-9340-5
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DOI: https://doi.org/10.1007/s11043-017-9340-5