Effect of anisotropy on steady state creep in functionally graded cylinder

Singh, Tejeet; Gupta, V. K.

doi:10.1016/j.compstruct.2010.08.005

Cited by 40 publications

(11 citation statements)

References 39 publications

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“…The values of parameters M ( r ) and σ o ( r ) are estimated from the regression equations, 16 which have been developed by fitting the published experimental data for 6061Al-SiC w .…”

Section: Creep Modeling In Anisotropic Fgm Discmentioning

confidence: 99%

“…The constitutive equations for multi-axial creep, as observed in a rotating disc, in terms of cylindrical coordinate system under plane stress condition are expressed as, 16…”

Section: Creep Modeling In Anisotropic Fgm Discmentioning

confidence: 99%

“…As a consequence, the whiskers or short-fibers get aligned along the preferred directions, and results in inducing the anisotropy. 5,16 The attempts are made to examine the role of materials’ anisotropy on the creep response of rotating disc. Bhatnagar et al 17 investigated creep in a rotating disc made of homogenous (referred to as non-FGM hereafter) orthotropic material for different thickness profiles.…”

Section: Introductionmentioning

confidence: 99%

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Influence of anisotropy on creep in functionally graded variable thickness rotating disc

Khanna

Gupta

Grover

2021

The Journal of Strain Analysis for Engineering Design

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The study is carried out to develop a mathematical model to analyze creep response of a varying thickness rotating disc made of anisotropic functionally graded 6061Al-SiCw.composite. The thickness and content of reinforcement (SiCw) in the disc are assumed to decrease radially according to power law. The yielding of disc material is according to Hill’s criterion and creeping as per threshold stress based law. The developed model is used to obtain the creep stresses and strain rates in the disc for various types of materials’ anisotropy. The stresses and strain rates are noticed to depend on the materials’ anisotropy. The study reveals that the presence of kind of anisotropy wherein the disc material exhibits lower yield strength toward the radial and tangential directions than the axial direction is beneficial in reducing the creep stresses and creep rates in the disc, in comparison to isotropic FGM disc. An anisotropic FG disc, which has highest and the lowest yield strengths, respectively, along the axial and radial directions shows superior creep response.

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“…The values of parameters M ( r ) and σ o ( r ) are estimated from the regression equations, 16 which have been developed by fitting the published experimental data for 6061Al-SiC w .…”

Section: Creep Modeling In Anisotropic Fgm Discmentioning

confidence: 99%

“…The constitutive equations for multi-axial creep, as observed in a rotating disc, in terms of cylindrical coordinate system under plane stress condition are expressed as, 16…”

Section: Creep Modeling In Anisotropic Fgm Discmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Influence of anisotropy on creep in functionally graded variable thickness rotating disc

Khanna

Gupta

Grover

2021

The Journal of Strain Analysis for Engineering Design

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“…The Beltrami-Michell approach consists in finding solutions for the differential equation (20) with boundary conditions (equation (21)) for the radial stress and computing relation (equation (18)) to provide the circumferential stress. Subsequently, radial and circumferential strains are computed using equations (15) and (12), respectively, and finally radial displacement from the second relation of equation (14).…”

Section: Plane Theory Of Elasticity Equationsmentioning

confidence: 99%

“…5 Various problems concerning FGMs have attracted considerable attention in recent years and their increasing use has taken advantage also from a comprehensive stress analysis. 6 With respect to this kind of analyses, several works are available in the literature, concerning, for instance, the thermo-mechanical behavior of plates, [7][8][9] hollow cylinders, [10][11][12] cylindrical vessels, [13][14][15] and spherical vessels. 16,17 Functionally graded rotating disks (FGRDs) belong to contemporary research challenges in Mechanical Engineering.…”

Section: Introductionmentioning

confidence: 99%

Thermo-mechanical analysis and optimization of functionally graded rotating disks

Abdalla

Casagrande

Moro

2020

The Journal of Strain Analysis for Engineering Design

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The behavior of thermo-mechanical stresses in functionally graded axisymmetric rotating hollow disks with variable thickness is analyzed. The material is assumed to be functionally graded in the radial direction. First, a two-dimensional axisymmetric model of the functionally graded rotating disk is developed using the finite element method. Exact solutions for stresses are then obtained assuming that the plane theory of elasticity holds. These solutions are in accordance with finite element ones, thus showing the validity of the assumption. Finally, in order to reduce the maximum equivalent stress along the radius, the optimization of the material distribution is addressed. To avoid subsequent finite element simulations in the optimization process, which can be computationally demanding, a nonlinear constrained optimization problem is proposed, for which the solution is obtained numerically by the sequential quadratic programming method, showing prominent results in terms of equivalent stress uniformity.

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Effect of Temperature on Creep Stresses in Thick Spherical Vessels Made of Composite Material

Sandhu¹,

Singh²,

Gupta

2020

Lecture Notes on Multidisciplinary Industrial Engineering

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Effect of anisotropy on steady state creep in functionally graded cylinder

Cited by 40 publications

References 39 publications

Influence of anisotropy on creep in functionally graded variable thickness rotating disc

Influence of anisotropy on creep in functionally graded variable thickness rotating disc

Thermo-mechanical analysis and optimization of functionally graded rotating disks

Effect of Temperature on Creep Stresses in Thick Spherical Vessels Made of Composite Material

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