Nonlinear thermoelastic waves in functionally graded materials: Application to Si1−cGec nanowires. Issue 5 (3rd May 2020)

• Record Type: Journal Article
• Authors: Cimmelli, V. A.; Jou, D.; Sellitto, A.
• Is Part Of: Journal of thermal stresses. Volume 43:Issue 5(2020)
• Page Start: 612
• Page End: 628
• Publication Date: 2020-05-03
• Subjects: Functionally graded materials -- nonlinear thermoelasticity -- thermoelastic waves; Thermal stresses -- Periodicals; 620.1121
• DOI: 10.1080/01495739.2020.1730283
• Languages: English
• ISSNs: 0149-5739

Abstract

Abstract: We propose a thermodynamic model to describe the thermoelastic behavior of Functionally Graded Materials. Specifically, the thermoelastic response of these materials to coupled thermal and elastic perturbations is studied in view of a nonlinear heat-transport equation. The necessary and sufficient conditions ensuring the compatibility of the model with second law of thermodynamics are carried out. Propagation of thermoelastic waves, both in equilibrium and nonequilibrium states, is analyzed. The influence of the stoichiometry on the speed of propagation of coupled first-and second-sound waves is pointed out.