Wave propagation in a two-temperature fiber-reinforced magneto-thermoelastic medium with three-phase-lag model

2016 ◽  
Vol 57 (2) ◽  
pp. 201-220 ◽  
Author(s):  
Samia M. Said ◽  
Mohamed I.A. Othman
Keyword(s):  
Wave Propagation ◽  
Phase Lag ◽  
Fiber Reinforced ◽  
Thermoelastic Medium ◽  
Three Phase ◽  
Lag Model ◽  
Two Temperature

scholarly journals The effect of two-temperature on thermoelastic medium with diffusion due to three phase-lag model

2017 ◽  
Vol 2 (1) ◽  
pp. 259-270 ◽  
Author(s):  
Sarhan Y. Atwa ◽  
M. K. Ammar ◽  
Eman Ibrahim
Keyword(s):  
Elastic Medium ◽  
Normal Mode Analysis ◽  
Mode Analysis ◽  
Phase Lag ◽  
Thermoelastic Medium ◽  
Three Phase ◽  
Lag Model ◽  
Isotropic Elastic Medium ◽  
Two Temperature ◽  
Made In

AbstractThis paper is concerned on the distribution of a homogeneous isotropic elastic medium with diffusion under the effect of Three-phase-lag model. Normal mode analysis is used to express the exact expressions for temperature, displacements and stresses functions. Comparisons are made in the absence and presence of diffusion with some theories like Three-phase-lag and GNIII.

A novel model of plane waves of two-temperature fiber-reinforced thermoelastic medium under the effect of gravity with three-phase-lag model

2019 ◽  
Vol 29 (12) ◽  
pp. 4788-4806 ◽  
Author(s):  
Mohamed I.A. Othman ◽  
Samia Said ◽  
Marin Marin
Keyword(s):  
Energy Dissipation ◽  
Plane Waves ◽  
Mode Analysis ◽  
Phase Lag ◽  
Fiber Reinforced ◽  
Thermoelastic Medium ◽  
Content Type ◽  
Three Phase ◽  
Novel Model ◽  
Two Temperature

Purpose In the present paper, the three-phase-lag (3PHL) model, Green-Naghdi theory without energy dissipation (G-N II) and Green-Naghdi theory with energy dissipation (G-N III) are used to study the influence of the gravity field on a two-temperature fiber-reinforced thermoelastic medium. Design/methodology/approach The analytical expressions for the displacement components, the force stresses, the thermodynamic temperature and the conductive temperature are obtained in the physical domain by using normal mode analysis. Findings The variations of the considered variables with the horizontal distance are illustrated graphically. Some comparisons of the thermo-physical quantities are shown in the figures to study the effect of the gravity, the two-temperature parameter and the reinforcement. Also, the effect of time on the physical fields is observed. Originality/value To the best of the author’s knowledge, this model is a novel model of plane waves of two-temperature fiber-reinforced thermoelastic medium, and gravity plays an important role in the wave propagation of the field quantities. It explains that there are significant differences in the field quantities under the G-N II theory, the G-N III theory and the 3PHL model because of the phase-lag of temperature gradient and the phase-lag of heat flux.

The effect of temperature-dependent properties on generalized magneto-thermo-elastic medium with two-temperature under three-phase-lag model

2017 ◽  
Vol 13 (1) ◽  
pp. 122-134 ◽  
Author(s):  
Mohamed I.A. Othman ◽  
Yassmin D. Elmaklizi ◽  
Nehal T. Mansoure
Keyword(s):  
Magnetic Field ◽  
Elastic Medium ◽  
Modulus Of Elasticity ◽  
Phase Lag ◽  
Temperature Dependent ◽  
Content Type ◽  
Three Phase ◽  
Lag Model ◽  
Temperature Dependent Properties ◽  
Two Temperature

Purpose The purpose of this paper is to investigate the propagation of plane waves in an isotropic elastic medium under the effect of rotation, magnetic field and temperature-dependent properties with two‐temperatures. Design/methodology/approach The problem has been solved analytically by using the normal mode analysis. Findings The numerical results are given and presented graphically when mechanical and thermal force are applied. Comparisons are made with the results predicted by the three-phase-lag (3PHL) model and dual-phase-lag model in the presence and absence of cases where the modulus of elasticity is independent of temperature. Originality/value In this work, the authors study the influence of rotation and magnetic field with two‐temperature on thermoelastic isotropic medium when the modulus of elasticity is taken as a linear function of reference temperature in the context of the 3PHL model. The numerical results for the field quantities are obtained and represented graphically.

scholarly journals Effect of viscosity on wave propagation in anisotropic thermoelastic medium with three-phase-lag model

2012 ◽  
Vol 39 (4) ◽  
pp. 313-341 ◽  
Author(s):  
Rajneesh Kumar ◽  
Vijay Chawla ◽  
Ibrahim Abbas
Keyword(s):  
Wave Propagation ◽  
Transversely Isotropic ◽  
Phase Lag ◽  
Two Phase ◽  
Transverse Waves ◽  
Three Phase ◽  
Lag Model ◽  
Anisotropic Thermoelastic Medium ◽  
Different Characteristics ◽  
Special Case

The aim of the present paper is to study the wave propagation in anisotropic viscoelastic medium in the context of the theory threephase- lag model of thermoelasticity. It is found that there exist two quasi-longitudinal waves (qP1, qP2) and two transverse waves (qS1, qS2). The governing equations for homogeneous transversely isotropic thermoviscoelastic are reduced as a special case from the considered model. Different characteristics of waves like phase velocity, attenuation coefficient, specific loss and penetration depth are computed from the obtained results. Viscous effect is shown graphically on different resulting quantities for two-phase-lag model and three-phase-lag model of thermoelasticity. Some particular cases of interest are also deduced from the present investigation.

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