scholarly journals Disturbance due to mechanical and thermal sources in a generalized thermo-microstretch elastic half space

Sadhana ◽  
2001 ◽  
Vol 26 (6) ◽  
pp. 529-547 ◽  
Author(s):  
Rajneesh Kumar ◽  
Sunita Deswal
Keyword(s):  
Half Space ◽  
Elastic Half Space ◽  
Mechanical And Thermal Sources ◽  
Thermal Sources

Interaction due to Mechanical and Thermal Sources in Thermoelastic Half-Space with Voids

2005 ◽  
Vol 11 (4) ◽  
pp. 499-517 ◽  
Author(s):  
Rajneesh Kumar ◽  
Leena Rani
Keyword(s):  
Half Space ◽  
Normal Force ◽  
Volume Fraction ◽  
Thermal Source ◽  
Physical Domain ◽  
Coupled Thermoelasticity ◽  
Time Harmonic ◽  
The Fourier Transform ◽  
Mechanical And Thermal Sources ◽  
Thermal Sources

The dynamic response of a homogeneous, isotropic, thermoelastic half-space with voids subjected to time harmonic normal force and thermal source is investigated by applying the Fourier transform. The displacements, stresses, temperature distribution, and change in volume fraction field obtained in the physical domain are computed numerically and illustrated graphically. The numerical results of these quantities for magnesium crystal-like material are illustrated to depict the voids effect for the theory of coupled thermoelasticity and uncoupled thermoelasticity for an insulated boundary and temperature gradient boundary.

The efficiency of application of virtual cross-sections method and hypotheses MELS in problems of wave signal propagation in elastic waveguides with rough surfaces

2016 ◽  
pp. 3564-3575 ◽  
Author(s):  
Ara Sergey Avetisyan
Keyword(s):  
Half Space ◽  
Cross Sections ◽  
Classical Method ◽  
Signal Propagation ◽  
Elastic Half Space ◽  
Layered Systems ◽  
Surface Layers ◽  
Inhomogeneous Surface ◽  
Wave Signal ◽  
The Impact

The efficiency of virtual cross sections method and MELS (Magneto Elastic Layered Systems) hypotheses application is shown on model problem about distribution of wave field in thin surface layers of waveguide when plane wave signal is propagating in it. The impact of surface non-smoothness on characteristics of propagation of high-frequency horizontally polarized wave signal in isotropic elastic half-space is studied. It is shown that the non-smoothness leads to strong distortion of the wave signal over the waveguide thickness and along wave signal propagation direction as well.  Numerical comparative analysis of change in amplitude and phase characteristics of obtained wave fields against roughness of weakly inhomogeneous surface of homogeneous elastic half-space surface is done by classical method and by proposed approach for different kind of non-smoothness.

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