Tooling in the die and mould industry is subjected to high-wear high-temperature environments, which often leads premature failure of this high-added-value tooling. When severe damage occurs, an alternative replacing whole component consists repair by laser-directed energy deposition (L-DED). For that end, intermediate layers are commonly employed as buffer material, where introducing a functio...

The functionally graded materials (FGM) have many advantages especially in thermal environments, and in the recent years they have been used in many engineering applications. A FGM plate is an inhomogeneous composite made of two constituents (usually ceramic and metal), with both the composition and the material properties varying smoothly through the thickness of the plate. The FGM plate vibra...

The analytical solution of functionally graded piezoelectric hollow cylinder which is under radial electric potential and non-axisymmetric thermo-mechanical loads, are presented in this paper. Using complex Fourier series and estimation of power law for variations of material characterizations through the thickness, the electro thermo mechanical behavior of the FGPM cylinder is obtained. The st...

A complete investigation on the free vibration and stability analysis of beams made of functionally graded materials (FGMs) containing open edge cracks utilizing four beam theories, Euler-Bernoulli, Rayleigh, shear and Timoshenko, is performed in this research. It is assumed that the material properties vary along the beam thickness exponentially and the cracked beam is modeled as two segments ...

In this paper, we provide a unified and self-consistent treatment of a functionally graded material (FGM) microbeam with varying thermal conductivity subjected to non-uniform or uniform temperature field. Specifically, it is our objective to determine the effect of the microscopic size of the beam, the electrostatic gap, the temperature field and material property on the pull-in voltage of the ...

This work deals with the modeling of plate structures constituted Functionally Graded Material through a variable separation approach. The displacement field is approximated as sum separated functions in-plane coordinates x, y and transverse coordinate z. choice yields to nonlinear problem that can be solved by an iterative process. Two 2D 1D linear problems are successively. In thickness direc...

A new mixed four-node quadrilateral element (MiQ4) is established in this paper to investigate functionally graded material (FGM) plates with variable thickness. The proposed developed based on the first-order shear deformation and finite technique, so does not need any selective or reduced numerical integration. Numerous basic tests have been carried out demonstrate accuracy convergence of ele...

this work presents thermoplastic analysis of fg rotating diskswith variable thickness and constant angular velocity. the solutions are obtained by variable material property (vmp) theory. in this theory, the domain is divided into some finite sub-domains in the radial direction, in which the properties are assumed to be constant and the form of the elastic response is used to solve elastic-plas...

Al/SiC functionally graded and metal-matrix composites were investigated through dynamic mechanical analyzer as a function of vibrating frequencies. It was found that internal frictions strongly dependent on material type frequency. Tan ? reached 30.4 × 10–3 21.2 10–3in FGM MMC, respectively, at frequency 1 Hz. The damping capacity decreased the increased to 10 Hz 30 Storage moduli 172 GPa 144 ...