Effect of reinforcement gradient on steady state creep in a variable thickness rotating disc made of non-linear FGM

Garg, Manish; Salaria, B. S.; Gupta, V. K.

doi:10.1504/ijmatei.2013.052792

Cited by 2 publications

(2 citation statements)

References 16 publications

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“…It can be concluded that the stresses and strain rates in both the radial and tangential directions reduce significantly with the increase in thickness gradient of the composite disc. Garg et al [6] carried out the steady-state creep analysis in linearly varying thickness rotating disc made of functionally graded composite and with stress exponent 5. The study reveals that the magnitude of strain rates and extent of distortion in the disc could be reduced significantly by employing FGM linearly varying thickness disc with higher reinforcement.…”

Section: Introductionmentioning

confidence: 99%

Mathematical Modeling of Creep in a Functionally Graded Rotating Disc with Varying Thickness

Gupta

Singh

2016

Regen. Eng. Transl. Med.

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This study puts forward an analytical framework for the analysis of creep stresses and creep rates in the isotropic rotating non-FGM/FGM disc with uniform and varying thickness. The material parameters of creep vary along the radial distance in the disc due to varying composition, and this variation has been estimated by regression fit of the available experimental data. The creep behavior of the disc under stresses developing due to rotation has been determined following Sherby's law. The creep response of rotating disc is expressed by threshold stress with value of stress exponent as 8. The results obtained for isotropic non-FGM/FGM constant thickness disc have been compared to those estimated for isotropic varying thickness disc with the same average particle content distributed uniformly. Overall, our results suggest that the distribution of stresses and strain rates becomes relatively more uniform in the isotropic FGM hyperbolic thickness disc. Lay SummaryThe purpose of this paper is to investigate the steady-state creep response in the isotropic non-FGM/FGM varying thickness disc with linear variation of particle distribution along the radial distance. Mathematical model to describe steady-state creep behavior in an isotropic rotating disc made of silicon carbide particulate composite has been developed. Three variations in the thickness (constant, linear, and hyperbolic) of the rotating composite non-FGM/FGM disc have been considered, while keeping average volume of all the discs is the same. The study revealed that the strain rates are the lowest and more uniform in the FGM hyperbolic thickness disc having reinforcement distributed in a linear way as compared to non-FGM/FGM discs with constant and linear thickness.

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Section: Introductionmentioning

confidence: 99%

Mathematical Modeling of Creep in a Functionally Graded Rotating Disc with Varying Thickness

Gupta

Singh

2016

Regen. Eng. Transl. Med.

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“…The effect of varying gradient parameter and imposing linear and quadratic composition gradient on creep response is studied. 27,28 In the investigations, dominance of grading parameter is shown on FGM plate under impact and creep loads without considering coupled thermomechanical and transient loads.…”

Section: Introductionmentioning

confidence: 99%

Transient thermoelastic investigation of FGM composite plate with varying grading parameter

Sharma

Jadon

Singh

et al. 2016

Proceedings of the Institution of Mechanical Engineers, Part L:

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Functionally graded materials (FGM) are newly developed materials described by variation in the characteristics gradually over volume. These materials find applications in very high temperature environments namely aerospace industry, nuclear reactors, gas turbines, and electronics cooling. These materials are used in high temperature environments with dynamic load conditions, so their transient thermoelastic analysis under these conditions is necessary. In this paper, transient thermoelastic investigation of FGM is carried out using finite element method (FEM). The effect of temperature dependence is considered in the thermophysical properties of a FGM plate in the direction of its thickness. FEM is applied to solve the thermo mechanical equations and Newmark direct integration scheme is used for obtaining the solution for transient loading. This method improves the accuracy for three dimensional cases and produces solutions directly in time domain. A comparative study is made with some existing methods, and it is found that temperature and thermal stresses remain within safe limits at higher temperatures while preserving the deformation in the structure. The results show that the grading parameter has a dominating effect on transient thermoelastic behavior on FGM plate.

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Effect of reinforcement gradient on steady state creep in a variable thickness rotating disc made of non-linear FGM

Cited by 2 publications

References 16 publications

Mathematical Modeling of Creep in a Functionally Graded Rotating Disc with Varying Thickness

Mathematical Modeling of Creep in a Functionally Graded Rotating Disc with Varying Thickness

Transient thermoelastic investigation of FGM composite plate with varying grading parameter

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