Analysis of Thermoelastic Characteristics of a Rotating FGM Circular Disk by Finite Element Method

Go, Jaegwi; Afsar, A. M.; Song, Jung Il

doi:10.1163/092430410x490473

Cited by 26 publications

(14 citation statements)

References 18 publications

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“…Horgan and Chan [19] found that for an inhomogeneous disk, the location of maximum radial and hoop stresses shift compared to the homogeneous disk problem. Similar investigations have been carried out by Damircheli and Azadi [10], Hassani et al [11], Afsar et al [12,13], and Go et al [13], to obtain stress field in FG rotating disks under thermal loads. Also, vibrations of FG disks have been studied by numerous researchers [14][15][16][17][18].…”

Section: Introductionsupporting

confidence: 57%

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Displacement and Stress Fields in a Functionally Graded Fiber-Reinforced Rotating Disk With Nonuniform Thickness and Variable Angular Velocity

Zheng

Bahaloo

Mousanezhad

et al. 2017

Journal of Engineering Materials and Technology

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Displacement and stress fields in a functionally graded (FG) fiber-reinforced rotating disk of nonuniform thickness subjected to angular deceleration are obtained. The disk has a central hole, which is assumed to be mounted on a rotating shaft. Unidirectional fibers are considered to be circumferentially distributed within the disk with a variable volume fraction along the radius. The governing equations for displacement and stress fields are derived and solved using finite difference method. The results show that for disks with fiber rich at the outer radius, the displacement field is lower in radial direction but higher in circumferential direction compared to the disk with the fiber rich at the inner radius. The circumferential stress value at the outer radius is substantially higher for disk with fiber rich at the outer radius compared to the disk with the fiber rich at the inner radius. It is also observed a considerable amount of compressive stress developed in the radial direction in a region close to the outer radius. These compressive stresses may prevent any crack growth in the circumferential direction of such disks. For disks with fiber rich at the inner radius, the presence of fibers results in minimal changes in the displacement and stress fields when compared to a homogenous disk made from the matrix material. In addition, we concluded that disk deceleration has no effect on the radial and hoop stresses. However, deceleration will affect the shear stress. Tsai–Wu failure criterion is evaluated for decelerating disks. For disks with fiber rich at the inner radius, the failure is initiated between inner and outer radii. However, for disks with fiber rich at the outer radius, the failure location depends on the fiber distribution.

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Section: Introductionsupporting

confidence: 57%

“…There are a number of investigations toward understanding inplane and out-of-plane behaviors of FG rotating disks made of an isotropic material [5][6][7][8][9][10][11][12][13][14][15][16][17][18][19]. Çallio glu et al [6] obtained closed-form solutions for stress field in a FG rotating disk with constant angular velocity.…”

Section: Introductionmentioning

confidence: 99%

Displacement and Stress Fields in a Functionally Graded Fiber-Reinforced Rotating Disk With Nonuniform Thickness and Variable Angular Velocity

Zheng

Bahaloo

Mousanezhad

et al. 2017

Journal of Engineering Materials and Technology

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“…Parallel misalignment between drive and driven shafts stabilize the systems due to change in the direction of local frictional force. In the previous study [11], it has been demonstrated that by proper control some parameters such as temperature distribution, angular speed, and radial thickness improved thermos-elastic characteristics are obtained in the design of a circular or grinding disk.…”

Section: Jaegwi Gomentioning

confidence: 99%

Thermo-elastic characteristics of homogeneous circular disk models subjecting to a contact force

Go¹

2019

ces

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The thermo-elastic characteristics of a rotating Al homogeneous circular disk have been investigated by considering a contact force on a work piece area. A pair of partial differential equation is induced as a governing equations based on Hooke's law. Due to the complexity of the governing equations a finite volume model is applied to the problem to obtain approximate solutions. Contact force may not be ignorable parameter to determine thermoelastic movements in rotating circular disk. Moreover, the numerical approximations yields that radial thickness is a crucial factor to control the thermo-elastic behavior of rotating circular disks.

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“…However, the linear function assumption is not sufficient for describing more complicated cases. To capture Young's modulus and thermal expansion coefficient of the FGM thick-walled tube more precisely, some researchers [10][11][12][13][14][15][16][17][18][19][20][21][22] proposed another assumption of Young's modulus such as the form of E(r ) = E 0 r m 1 (E 0 and m 1 are material constants, r is the radial coordinate of the cylinder) and thermal expansion coefficient such as the form of α(r ) = α 0 r m 2 (α 0 and m 2 are material constants). For convenience, thermal conductivity and density of the FGM tube were mostly assumed as the form k(r ) = k 0 r m 3 (k 0 and m 3 are material constants) and ρ(r ) = ρ 0 r m 4 (ρ 0 and m 4 are material constants), respectively.…”

Section: Introductionmentioning

confidence: 99%

Thermoelastic Analysis of a Functionally Graded Rotating Thick-Walled Tube Subjected to Mechanical and Thermal Loads

Xin

Yang

et al. 2015

Int J Thermophys

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A thermoelastic solution for the functionally graded rotating thick-walled tube subjected to axisymmetric mechanical and thermal loads is given in terms of volume fractions of constituents. We assume that the tube consists of two linear elastic constituents and the volume fraction of one phase is a power function varied in the radial direction. By using the assumption of a uniform strain field within the representative volume element, the theoretical solutions of the displacement and the stresses are presented. Based on the relation of the volume average stresses of constituents and the macroscopic stresses of the composite material in micromechanics, the present method can avoid the assumption of the distribution regularities of unknown overall material parameters appeared in existing papers, such as Young's modulus, thermal expansion coefficient, thermal conductivity, and density. The effects of the angular velocity, the volume fraction, the ratio of two thermal expansion coefficients, the ratio of two thermal conductivities, and the ratio of two densities on the displacement and stresses are systematically studied, which should help structural engineers and material scientists optimally design thick-walled tube comprised inhomogeneous materials.

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Analysis of Thermoelastic Characteristics of a Rotating FGM Circular Disk by Finite Element Method

Cited by 26 publications

References 18 publications

Displacement and Stress Fields in a Functionally Graded Fiber-Reinforced Rotating Disk With Nonuniform Thickness and Variable Angular Velocity

Displacement and Stress Fields in a Functionally Graded Fiber-Reinforced Rotating Disk With Nonuniform Thickness and Variable Angular Velocity

Thermo-elastic characteristics of homogeneous circular disk models subjecting to a contact force

Thermoelastic Analysis of a Functionally Graded Rotating Thick-Walled Tube Subjected to Mechanical and Thermal Loads

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