 | | Mechanics of Solids
A Journal of Russian Academy of Sciences | | Founded
in January 1966
Issued 6 times a year
Print ISSN 0025-6544
Online ISSN 1934-7936 |
Archive of Issues
| Total articles in the database: | | 12977 |
| In Russian (Èçâ. ÐÀÍ. ÌÒÒ): | | 8096
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| In English (Mech. Solids): | | 4881 |
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| Elsayed M. Abd-Elaziz and Mohamed I.A. Othman, "Effect of Diffusion and Laser Pulse on a Poro-Thermoelastic Medium Via Three-Phase-Lag Model," Mech. Solids. 59 (5), 2820-2842 (2024) |
| Year |
2024 |
Volume |
59 |
Number |
5 |
Pages |
2820-2842 |
| DOI |
10.1134/S0025654424603410 |
| Title |
Effect of Diffusion and Laser Pulse on a Poro-Thermoelastic Medium Via Three-Phase-Lag Model |
| Author(s) |
Elsayed M. Abd-Elaziz (Ministry of Higher Education, Zagazig Higher Institute of Engineering and Technology, Zagazig, Egypt, sayed_nr@yahoo.com)
Mohamed I.A. Othman (Department of Mathematics, Faculty of Science, Zagazig University, Zagazig, 44519 Egypt, m_i_a_othman@yahoo.com) |
| Abstract |
The aim of this work is to investigate the effects of diffusion and thermal stress by pulsed
laser heating on thermoelastic solids with cavities in the context of a three-phase delay model. The
dimensionless governing equations are established, and then the exact expressions of temperature
field, displacement component, stress component, concentration field and volume fraction field changes are obtained by using normal mode technique. The material is an isotropic uniform elastic
half-space heated by a non-Gaussian laser beam with pulse duration 0.002 ps. Using a magnesium
crystal element as an application, the predictions of the model for diffusion and laser pulse-induced
three-phase hysteresis on porous thermoelastic media are compared with those of the Green-Naghdi
type III theory. The obtained thermal change results are verified by comparison with two theories of
thermoelasticity, the three-phase lag (3PHL) model and the Green and Nagdi type III theory. Plot the field quantities to examine the effect of the laser pulse at two different values of time and the effect void
parameter. This study also yields some interesting special cases. |
| Keywords |
three-phase-lag model, laser pulse, diffusion, voids, normal mode analysis |
| Received |
17 April 2024 | Revised |
09 June 2024 | Accepted |
18 June 2024 |
| Link to Fulltext |
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