Wave propagation and attenuation in time in local thermal non-equilibrium triple porosity thermoelastic medium
| العنوان: | Wave propagation and attenuation in time in local thermal non-equilibrium triple porosity thermoelastic medium |
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| المؤلفون: | Cătălin Galeş, Stan Chiriţă |
| المصدر: | Acta Mechanica. 232:4217-4233 |
| بيانات النشر: | Springer Science and Business Media LLC, 2021. |
| سنة النشر: | 2021 |
| مصطلحات موضوعية: | Standing wave, Shear waves, Thermoelastic damping, Materials science, Wave propagation, Mechanical Engineering, Attenuation, Dispersion relation, Computational Mechanics, Relaxation (physics), Mechanics, Longitudinal wave |
| الوصف: | This paper addresses the wave propagation problem within the context of the theory of materials with triple porosity under local thermal non-equilibrium. The time-harmonic wave solution is studied and the dispersion relation is explicitly established as an eighth-degree algebraic equation. It is shown that there are two shear waves undamped in time, that are non-dispersive and unaltered by the presence of the pore system or by thermal effects. Also, there are seven longitudinal wave solutions that are dispersive and damped in time: one longitudinal quasi-elastic wave, three longitudinal quasi-pore standing waves and three other longitudinal quasi-thermal standing waves. An illustrative simulation on a material like Berea sandstone shows that the effects of coupling triple porosity with local thermal imbalance and mechanical deformations leads to an increase in the propagation speed of the longitudinal quasi-elastic wave accompanied by an increase in its rate of decrease over time, as well as to a relaxation of the decrease in time for the quasi-pore and quasi-thermal standing waves. |
| تدمد: | 1619-6937 0001-5970 |
| الوصول الحر: | https://explore.openaire.eu/search/publication?articleId=doi_________::4a5409d213783bac4aae3ff9ca588994Test https://doi.org/10.1007/s00707-021-03044-yTest |
| حقوق: | CLOSED |
| رقم الانضمام: | edsair.doi...........4a5409d213783bac4aae3ff9ca588994 |
| قاعدة البيانات: | OpenAIRE |
| تدمد: | 16196937 00015970 |
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