Guided wave propagation in thermal media through the semi analytical finite element method
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National School of Engineers of Sfax, Unit of Dynamics of the Mechanical Systems, Sfax
Ecole Centrale de Lyon, Laboratory of Tribology and Dynamics of Systems (LTDS), Lyon
Journal of Theoretical and Applied Mechanics 2016;54(1):285–293
In this paper, the issue of the estimation of wave propagation characteristics in thermal media is dealt with. A formulation, named the Thermal Semi Analytical Finite Element, based on the semi analytical finite element approach coupled with the thermal effect is offered. Temperature variations affect the mechanical properties of the waveguide. The question of dispersion curves and group velocities is studied. This study is expected to be of use in the sensitivity analysis of guided waves for wave propagation in thermal environment. Comparisons between numerical and analytical results are given to show the effectiveness of the proposed approach.