Thermo-Elastic Stress Analysis in a Thermoplastic Composite Disc

Sayer, Metin; Topçu, Muzaffer; Bektaş, Numan Behlül; Tarakcilar, Ali Riza

doi:10.1515/secm.2005.12.4.251

Cited by 7 publications

(6 citation statements)

References 7 publications

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“…Alexandrova and Vila Real [27] presented a mathematical model for displacement and stress fields in elastic-perfectly plastic anisotropic annular disks. Sayer et al [28] performed thermoelastic stress analysis on a thermoplastic curvilinearly fiberreinforced composite disk. They found that disks under linearly changing temperature produce lower stresses than under uniform temperature.…”

Section: Introductionmentioning

confidence: 99%

“…The angular velocity of the disk is assumed to be, xðtÞ ¼ x 0 e Àkt , where x 0 and k are two constant parameters [7]. Employing the method of separation of variables, the displacement field is represented as u r ðr; tÞ ¼ R r ðrÞK r ðtÞ (27) u h ðr; tÞ ¼ R h ðrÞK h ðtÞ (28) where K r ðtÞ ¼ e À2kt , K h ðtÞ ¼ e Àkt , and R r ðrÞ and R h ðrÞ are two unknown functions of the radial coordinate, r, to be determined. Substituting Eqs.…”

Section: Introductionmentioning

confidence: 99%

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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: Introductionmentioning

confidence: 99%

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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“…They reported that, thermal stresses occurred in the composite disc for the uniform thermal distribution due to the different thermal expansion coefficients in principal material directions. Sayer et al [10] studied thermo-elastic stress analysis on a low-density thermoplastic composite disc reinforced curvilinearly with E-glass fibers. Sayman [11] examined a thermal stress analysis on an aluminum metal-matrix orthotropic composite hollow disc by using an analytical solution.…”

Section: Introductionmentioning

confidence: 99%

The Effect on Thermal and Residual Stresses of Parabolic Temperature Loading in a Thermoplastic Composite Disc

Şen

2007

Journal of Reinforced Plastics and Composites

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The aim of this study was to investigate of the effect on thermal and residual stresses of parabolic temperature loading in a thermoplastic composite disc. It was reinforced by steel-fibers as unidirectional for radial direction. The finite element method (FEM) was used to estimate the thermal elastic, elasto-plastic, and also the residual stress distributions in the selected model of the composite disc. Consequently, the thermal stress analysis was carried out using ANSYS finite element software. The temperature loading was selected to vary parabolically from inner surface to outer surface along the radial sections. Different values of it were effected in the disc model. Thermal loading was chosen from 80°C to 120°C. Because of the composite disc having different thermal expansions in radial and tangential directions, thermal stresses were produced in it by the applied thermal loadings. The values of the tangential stress components both elastic and elasto-plastic solutions were higher than the radial stress components. Besides, the residual stress components were calculated using elastic and elasto-plastic solution results. The results obtained showed that the magnitude of thermal and residual stresses considerably increased parabolic temperature loadings.

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“…The solution was performed numerically, for non-hardening case. Sayer et al [11] investigated thermo-elastic stresses on a low-density thermoplastic composite disc reinforced curvilinearly with E-glass fibres.…”

Section: Introductionmentioning

confidence: 99%

Elastic-Plastic Thermal Stresses in a Composite Disc with Multiple Holes

Şen

2007

Advanced Composites Letters

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The goal of this study was to investigate elastic-plastic thermal stresses in a thermoplastic composite hollow disc with multiple holes. Different uniform temperature distributions were subjected to the disc as thermal loadings. The thermoplastic composite disc was reinforced by steel fibres as unidirectional for radial direction. Finite element method (FEM) was used to calculate both thermal and residual stresses. Therefore, the thermal stress analysis was carried out using ANSYS finite element software which is known a general purpose engineering simulation. Due to the composite disc having different thermal expansions in radial and tangential directions, thermal stresses were created in it by the applied thermal loadings. The magnitude of the tangential stress components both elastic and elastic-plastic solutions was higher than the radial stress components except edges of multiple holes. In addition, the residual stress components were computed using elastic and elasticplastic solution results. The calculated results pointed out that the magnitude of thermal and residual stresses were considerably affected increasing of uniform temperature loadings.

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Thermo-Elastic Stress Analysis in a Thermoplastic Composite Disc

Cited by 7 publications

References 7 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

The Effect on Thermal and Residual Stresses of Parabolic Temperature Loading in a Thermoplastic Composite Disc

Elastic-Plastic Thermal Stresses in a Composite Disc with Multiple Holes

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