Reference : Analysis of thermoelastic waves in a two-dimensional functionally graded materials do...
Scientific journals : Article
Engineering, computing & technology : Mechanical engineering
Computational Sciences
Analysis of thermoelastic waves in a two-dimensional functionally graded materials domain by the Meshless Local Petrov-Galerkin (MLPG) method
Akbari R., Ahmad mailto [Power and Water University of Technology, PWUT, Tehran, Iran > Energy]
Bagri, A. [Division of Engineering, Brown University, Providence, RI 02912, United States]
Bordas, Stéphane mailto [University of Luxembourg > Faculty of Science, Technology and Communication (FSTC) > Engineering Research Unit >]
Rabczuk, T. [Institute of Structural Mechanics, Bauhaus-University Weimar, Marienstraße 15, 99423 Weimar, Germany]
Computer Modeling in Engineering & Sciences
[en] Functionally graded materials ; MLPG ; Thermoelasticity ; Wave propagation ; Constituent materials ; Dynamic displacements ; Effective mechanical properties ; Functionally graded ; Material compositions ; Material distribution ; Mesh-less methods ; Meshless approach ; Meshless local Petrov-Galerkin method ; Mori-Tanaka scheme ; Power-law functions ; Rectangular domain ; Stress field ; Thermal field ; Thermoelastic waves ; Transient thermal loading ; Dynamic response ; Elastic waves ; Elasticity ; Fracture ; Galerkin methods ; Mechanical properties ; Soil structure interactions ; Two dimensional
[en] This contribution focuses on the simulation of two-dimensional elastic wave propagation in functionally graded solids and structures. Gradient volume fractions of the constituent materials are assumed to obey the power law function of position in only one direction and the effective mechanical properties of the material are determined by the Mori-Tanaka scheme. The investigations are carried out by extending a meshless method known as the Meshless Local Petrov-Galerkin (MLPG) method which is a truly meshless approach to thermo-elastic wave propagation. Simulations are carried out for rectangular domains under transient thermal loading. To investigate the effect of material composition on the dynamic response of functionally graded materials, a metal/ceramic (Aluminum (Al) and Alumina (Al 2O 3) are considered as ceramic and metal constituents) composite is considered for which the transient thermal field, dynamic displacement and stress fields are reported for different material distributions. Copyright © 2010 Tech Science Press.
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