Time-dependent creep analysis of ultra-high-temperature functionally graded rotating disks of variable thickness
Functionally graded materials (FGMs) are high temperature-resistant materials that can simultaneously maintain metallic tenacity and anti-corrosive properties. Nevertheless, using FGMs during a multi-year service life at ultrahigh temperatures is crucial. Hence, the time-dependent creep response of...
| Main Authors: | , , , , |
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| Format: | Article |
| Language: | English |
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Elsevier
2023-12-01
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| Series: | Forces in Mechanics |
| Subjects: | |
| Online Access: | http://www.sciencedirect.com/science/article/pii/S2666359723000707 |
| _version_ | 1797390411115790336 |
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| author | Vahid Daghigh Hamed Edalati Hamid Daghigh Davy M. Belk Kamran Nikbin |
| author_facet | Vahid Daghigh Hamed Edalati Hamid Daghigh Davy M. Belk Kamran Nikbin |
| author_sort | Vahid Daghigh |
| collection | DOAJ |
| description | Functionally graded materials (FGMs) are high temperature-resistant materials that can simultaneously maintain metallic tenacity and anti-corrosive properties. Nevertheless, using FGMs during a multi-year service life at ultrahigh temperatures is crucial. Hence, the time-dependent creep response of variable-thickness rotating disks made of FGM is investigated. Four different disk profiles of linear, concave, convex, and uniform are considered. The material's creep properties are defined by the Bailey-Norton creep law. Loading is a rotation-based mechanical body force and a uniform temperature throughout the disk. Simultaneous solution of equilibrium, stress-strain, and strain-displacement equations yields a non-homogenous differential equation containing variable and time-dependent coefficients. In an attempt to optimize the computation cost, Bat and Fish algorithms were used to optimize the initial strain presumptions. Semi-analytical solution of this differential equation gives radial and circumferential stress histories and displacement histories. To confirm the solution method, initial thermo-elastic radial stress, and the effective stress history are validated with the existing literature; there is a good agreement between the results. In addition, the finite element software ABAQUS was used to model the FGM disk thermo-elastic behavior, and the result was compared with the semi-analytical solution results. This study emphasizes the significance of accounting for creep effects in the design of FGM rotating disks, as remarkable changes in their displacements and stresses occur over time. This study emphasizes the significance of accounting for creep effects in the design of FGM rotating disks, as notable changes in their displacements and stresses occur over time. |
| first_indexed | 2024-03-08T23:10:17Z |
| format | Article |
| id | doaj.art-499626a7d7a64c4aa76d0b42582874c0 |
| institution | Directory Open Access Journal |
| issn | 2666-3597 |
| language | English |
| last_indexed | 2024-03-08T23:10:17Z |
| publishDate | 2023-12-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Forces in Mechanics |
| spelling | doaj.art-499626a7d7a64c4aa76d0b42582874c02023-12-15T07:26:05ZengElsevierForces in Mechanics2666-35972023-12-0113100235Time-dependent creep analysis of ultra-high-temperature functionally graded rotating disks of variable thicknessVahid Daghigh0Hamed Edalati1Hamid Daghigh2Davy M. Belk3Kamran Nikbin4Department of Mechanical Engineering, Texas A&M University, College Station, Texas, United States; Department of Aerospace Engineering, Mississippi State University, Mississippi, United States; Corresponding author.Department of Mechanical Engineering, Jasb Branch, Islamic Azad University, Jasb, Delijan, IranSchool of Engineering, University of British Columbia, Kelowna, CanadaDepartment of Aerospace Engineering, Mississippi State University, Mississippi, United StatesDepartment of Mechanical Engineering, Imperial College, London, United KingdomFunctionally graded materials (FGMs) are high temperature-resistant materials that can simultaneously maintain metallic tenacity and anti-corrosive properties. Nevertheless, using FGMs during a multi-year service life at ultrahigh temperatures is crucial. Hence, the time-dependent creep response of variable-thickness rotating disks made of FGM is investigated. Four different disk profiles of linear, concave, convex, and uniform are considered. The material's creep properties are defined by the Bailey-Norton creep law. Loading is a rotation-based mechanical body force and a uniform temperature throughout the disk. Simultaneous solution of equilibrium, stress-strain, and strain-displacement equations yields a non-homogenous differential equation containing variable and time-dependent coefficients. In an attempt to optimize the computation cost, Bat and Fish algorithms were used to optimize the initial strain presumptions. Semi-analytical solution of this differential equation gives radial and circumferential stress histories and displacement histories. To confirm the solution method, initial thermo-elastic radial stress, and the effective stress history are validated with the existing literature; there is a good agreement between the results. In addition, the finite element software ABAQUS was used to model the FGM disk thermo-elastic behavior, and the result was compared with the semi-analytical solution results. This study emphasizes the significance of accounting for creep effects in the design of FGM rotating disks, as remarkable changes in their displacements and stresses occur over time. This study emphasizes the significance of accounting for creep effects in the design of FGM rotating disks, as notable changes in their displacements and stresses occur over time.http://www.sciencedirect.com/science/article/pii/S2666359723000707Time-dependent creepFunctionally graded materialsRotating diskVariable thicknessUltra-high temperatureFinite element ABAQUS |
| spellingShingle | Vahid Daghigh Hamed Edalati Hamid Daghigh Davy M. Belk Kamran Nikbin Time-dependent creep analysis of ultra-high-temperature functionally graded rotating disks of variable thickness Forces in Mechanics Time-dependent creep Functionally graded materials Rotating disk Variable thickness Ultra-high temperature Finite element ABAQUS |
| title | Time-dependent creep analysis of ultra-high-temperature functionally graded rotating disks of variable thickness |
| title_full | Time-dependent creep analysis of ultra-high-temperature functionally graded rotating disks of variable thickness |
| title_fullStr | Time-dependent creep analysis of ultra-high-temperature functionally graded rotating disks of variable thickness |
| title_full_unstemmed | Time-dependent creep analysis of ultra-high-temperature functionally graded rotating disks of variable thickness |
| title_short | Time-dependent creep analysis of ultra-high-temperature functionally graded rotating disks of variable thickness |
| title_sort | time dependent creep analysis of ultra high temperature functionally graded rotating disks of variable thickness |
| topic | Time-dependent creep Functionally graded materials Rotating disk Variable thickness Ultra-high temperature Finite element ABAQUS |
| url | http://www.sciencedirect.com/science/article/pii/S2666359723000707 |
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