An investigation of stresses and deformation states of clamped rotating functionally graded disk

Thawait, Amit Kumar; Sondhi, Lakshman; Sanyal, Shubhashis; Bhowmick, Shubhankar

doi:10.15632/jtam-pl.55.1.189

Cited by 3 publications

(2 citation statements)

References 13 publications

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“…Alternatively, [9] also considered unsymmetrical shapes. [10] and [11] followed a different approach. While [10] adapted the flywheel shape to achieve an even stress distribution by varying the thickness along the radius, [11] altered the flywheel thickness as well as the material properties (e.g.…”

Section: Introductionmentioning

confidence: 99%

“…[10] and [11] followed a different approach. While [10] adapted the flywheel shape to achieve an even stress distribution by varying the thickness along the radius, [11] altered the flywheel thickness as well as the material properties (e.g. by using functionally graded materials) to optimize the flywheel concerning the stress to strength ratio.…”

Section: Introductionmentioning

confidence: 99%

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Tomares

et al. 2021

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In aerospace industry, saving mass on spacecrafts always remain in large demand to save launch costs or increase the available payload mass. A case study is carried out designing a first concept of an additive manufactured flywheel of a reaction wheel, as it is one of the heaviest parts of wheel systems. As an objective the mass is minimized, while obtaining an angular momentum suitable according to mission requirements and maintaining recent performances. As references the SeaSAT mission and a commercial reaction wheel are used. The work includes a preliminary dimension of the flywheels design space by MATLAB calculations, where in total 15 shapes are analyzed and compared. The most promising design space is afterwards analyzed via the finite-element tool ANSYS and is defined as the reference flywheel. The reference flywheel is used for topology optimizations (ANSYS Topology Optimization), where different boundary conditions are considered. The final designed flywheel obtains 16% higher energy density than the reference flywheel and withstands the mission loads. It can be concluded that it was possible to design a flywheel obtaining less mass while keeping the expected performance.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Tomares

et al. 2021

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Deformation Analysis of Variable Thickness Rotating Disks Using an Improved Adomian Decomposition Technique

Kutsal

Coşkun

2020

Int. J. Appl. Mechanics

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In this study, axisymmetric elastic deformation analysis of rotating disks with variable thickness is conducted using an improved Adomian decomposition method (IADM). Variation of thickness is assumed as hyperbolic and different variations are employed for each case considered. Several analytical approximate solutions in different orders are obtained for radial stress, tangential stress, radial displacement and are compared with exact solutions. Results show that IADM can effectively be used in the deformation analysis of rotating variable thickness disks providing the solution as an analytical continuous function in the solution domain.

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Stress and Deformation Analysis of Clamped Functionally graded Rotating Disks with Variable Thickness

Thawait

Sondhi²,

Sanyal

et al. 2019

Mechanics and Mechanical Engineering

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The present study reports the linear elastic analysis of variable thickness functionally graded rotating disks. Disk material is graded radially by varying the volume fraction ratios of the constituent components. Three types of distribution laws, namely power law, exponential law and Mori–Tanaka scheme are considered on a concave thickness profile rotating disk, and the resulting deformation and stresses are evaluated for clamped-free boundary condition. The investigation is carried out using element based grading of material properties on the discretized elements. The effect of grading on deformation and stresses is investigated for each type of material distribution law. Further, a comparison is made between different types of distributions. The results obtained show that in a rotating disk, the deformation and stress fields can be controlled by the distribution law and grading parameter n of the volume fraction ratio.

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An investigation of stresses and deformation states of clamped rotating functionally graded disk

Cited by 3 publications

References 13 publications

Tomares

Tomares

Deformation Analysis of Variable Thickness Rotating Disks Using an Improved Adomian Decomposition Technique

Stress and Deformation Analysis of Clamped Functionally graded Rotating Disks with Variable Thickness

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