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3D-wave propagation in generalized thermoelastic functionally graded disks

Entezari, A ; Sharif University of Technology | 2018

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  1. Type of Document: Article
  2. DOI: 10.1016/j.compstruct.2018.08.053
  3. Publisher: Elsevier Ltd , 2018
  4. Abstract:
  5. This paper explores the capabilities of refined finite elements for 3D analysing of thermoelastic waves propagation in disks made of functionally graded materials. Based on the Lord-Shulman generalized theory of thermoelasticity, the field equations are written according to the three-dimensional formalism of the Carrera Unified Formulation (CUF). The system of the coupled equations is solved in the Laplace domain and, then, converted in the time domain by using numerical inverse Laplace transform. For a functionally graded disk exposed to thermal shock load, the time histories of displacement, temperature and stress fields are reported for different gradation laws. Propagation and reflection of the thermoelastic waves are illustrated as well. Comparisons with analytical solutions demonstrated the significant rate of convergence and the accuracy of the presented finite elements. © 2018 Elsevier Ltd
  6. Keywords:
  7. Carrera Unified Formulation ; Disk ; Finite elements ; Functionally graded materials ; Elastic waves ; Finite element method ; Laplace transforms ; Thermoelasticity ; Wave propagation ; Carrera unified formulations ; Different gradations ; Functionally graded ; Generalized thermoelastic ; Numerical inverse Laplace transform ; Rate of convergence ; Thermoelastic waves
  8. Source: Composite Structures ; Volume 206 , 2018 , Pages 941-951 ; 02638223 (ISSN)
  9. URL: https://www.sciencedirect.com/science/article/pii/S026382231831821X