نتایج جستجو برای: keywords functionally graded materials fgm
تعداد نتایج: 2390822 فیلتر نتایج به سال:
This work involves the design optimization of metal–ceramic through thickness functionally graded material (FGM) plates subjected to thermomechanical loadings. Constrained was performed for minimum mass and cost FGM plates. The process plate structures requires a good choice metal ceramic materials adequate definition components volume fractions direction in order accomplish certain structural ...
In this paper, the divergent instability and coupled flutter characteristics of axially moving beams made functionally graded materials (FGM) are studied using interpolation matrix method. The material property beam is designed to change smoothly continuously along thickness direction. considering Euler-Bernoulli theory, Hamilton’s principle used derive differential equation transverse vibratio...
Nowadays, functionally graded materials (FGM) are widely used in many industrial, aerospace and military fields. On the other hand, the interest in the use of shrink-fitted assemblies is increasing for designing composite tubes, high-pressure vessels, rectors and tanks. Although extensive researches exist on thick-walled cylindrical shells, not many researches have been done on shrink-fitted th...
Thermoelastic simulation of functionally graded materials is practically important for engineers. Here, the extension and assembly of our two previous papers (Computational Mechanics 2006, 38, p51-60; Engineering Analysis with Boundary Elements 2008, 32, p704-712) is presented to evaluate the transient temperature and stress distributions in two-dimensional functionally graded solids. In this c...
Abstract This paper deals with functionally graded materials (FGM) as modern in transport vehicles. Basic methods of FGM production and areas their application are presented, well an example modelling plate. Bending freely supported square plates under the influence sinusoidal transverse load was analyzed. The made metal (aluminium) ceramic (alumina) which material characteristics change a func...
A new class of hybrid/mixed finite elements, denoted “HMFEM-C”, has been developed for modeling magneto-electro-elastic (MEE) materials. These elements are based on assuming independent strain-fields, electric and magnetic fields, and collocating them with the strain-fields, electric and magnetic fields derived from the primal variables (mechanical displacements, electric and magnetic potential...
This paper deals with the dynamic response of Functionally Graded Material (FGM) plates resting on a viscoelastic foundation under loads. The governing equations are derived by using Hamilton’s principle classical plate theory and higher-order shear deformation theory. Using state-space methods to find closed-form solution functionally graded rectangular foundation. Numerical examples given for...
In this paper, free vibration analysis of orthotropic functionally graded material (FGM) cylinders was carried out by a Mesh-Free method. In this analysis, moving least squares shape functions are used for approximation of displacement field in the weak form of equilibrium equation. Essential boundary conditions are imposed by transformation method. In this simulation, an axisymmetric model is ...
Crack tip deformations and fracture parameters in functionally graded glass-filled epoxy beams are experimentally evaluated under static and dynamic loading conditions. Beams with unidirectional, monotonic elastic gradients and cracks along the gradient are examined. SEN samples with increasing or decreasing Young’s modulus ahead of the crack tip are studied in symmetric four-point bending and ...
In this paper, finite element elastic contact analysis of a functionally graded (FG) hollow brake disk in contact with pad, subjected to rotation, contact pressure and frictional heat is presented. The material properties vary through the thickness according to a power-law characterised by a grading index, n. The material property is purely steel at the core part and gradually moves and appr...
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