Effects of Viscoelasticity on the Stress Evolution over the Lifetime of Filament-Wound Composite Flywheel Rotors for Energy Storage
High-velocity and long-lifetime operating conditions of modern high-speed energy storage flywheel rotors may create the necessary conditions for failure modes not included in current quasi-static failure analyses. In the present study, a computational algorithm based on an accepted analytical model...
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| Format: | Article |
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MDPI AG
2021-10-01
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| Series: | Applied Sciences |
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| Online Access: | https://www.mdpi.com/2076-3417/11/20/9544 |
| _version_ | 1797515442267357184 |
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| author | Miles Skinner Pierre Mertiny |
| author_facet | Miles Skinner Pierre Mertiny |
| author_sort | Miles Skinner |
| collection | DOAJ |
| description | High-velocity and long-lifetime operating conditions of modern high-speed energy storage flywheel rotors may create the necessary conditions for failure modes not included in current quasi-static failure analyses. In the present study, a computational algorithm based on an accepted analytical model was developed to investigate the viscoelastic behavior of carbon fiber reinforced polymer composite flywheel rotors with an aluminum hub assembled via a press-fit. The Tsai-Wu failure criterion was applied to assess failure. Two simulation cases were developed to explore the effects of viscoelasticity on composite flywheel rotors, i.e., a worst-case operating condition and a case akin to realistic flywheel operations. The simulations indicate that viscoelastic effects are likely to reduce peak stresses in the composite rim over time. However, viscoelasticity also affects stresses in the hub and the hub-rim interface in ways that may cause rotor failure. It was further found that charge-discharge cycles of the flywheel energy storage device may create significant fatigue loading conditions. It was therefore concluded that the design of composite flywheel rotors should include viscoelastic and fatigue analyses to ensure safe operation. |
| first_indexed | 2024-03-10T06:45:32Z |
| format | Article |
| id | doaj.art-9bc0a24050a14939a16334a667cd7a0c |
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| issn | 2076-3417 |
| language | English |
| last_indexed | 2024-03-10T06:45:32Z |
| publishDate | 2021-10-01 |
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| spelling | doaj.art-9bc0a24050a14939a16334a667cd7a0c2023-11-22T17:20:24ZengMDPI AGApplied Sciences2076-34172021-10-011120954410.3390/app11209544Effects of Viscoelasticity on the Stress Evolution over the Lifetime of Filament-Wound Composite Flywheel Rotors for Energy StorageMiles Skinner0Pierre Mertiny1Department of Mechanical Engineering, University of Alberta, 9211-116 St., Edmonton, AB T6G 1H9, CanadaDepartment of Mechanical Engineering, University of Alberta, 9211-116 St., Edmonton, AB T6G 1H9, CanadaHigh-velocity and long-lifetime operating conditions of modern high-speed energy storage flywheel rotors may create the necessary conditions for failure modes not included in current quasi-static failure analyses. In the present study, a computational algorithm based on an accepted analytical model was developed to investigate the viscoelastic behavior of carbon fiber reinforced polymer composite flywheel rotors with an aluminum hub assembled via a press-fit. The Tsai-Wu failure criterion was applied to assess failure. Two simulation cases were developed to explore the effects of viscoelasticity on composite flywheel rotors, i.e., a worst-case operating condition and a case akin to realistic flywheel operations. The simulations indicate that viscoelastic effects are likely to reduce peak stresses in the composite rim over time. However, viscoelasticity also affects stresses in the hub and the hub-rim interface in ways that may cause rotor failure. It was further found that charge-discharge cycles of the flywheel energy storage device may create significant fatigue loading conditions. It was therefore concluded that the design of composite flywheel rotors should include viscoelastic and fatigue analyses to ensure safe operation.https://www.mdpi.com/2076-3417/11/20/9544viscoelasticitypolymer composite materialflywheel energy storage systemflywheel failureTsai-Wu criterion |
| spellingShingle | Miles Skinner Pierre Mertiny Effects of Viscoelasticity on the Stress Evolution over the Lifetime of Filament-Wound Composite Flywheel Rotors for Energy Storage Applied Sciences viscoelasticity polymer composite material flywheel energy storage system flywheel failure Tsai-Wu criterion |
| title | Effects of Viscoelasticity on the Stress Evolution over the Lifetime of Filament-Wound Composite Flywheel Rotors for Energy Storage |
| title_full | Effects of Viscoelasticity on the Stress Evolution over the Lifetime of Filament-Wound Composite Flywheel Rotors for Energy Storage |
| title_fullStr | Effects of Viscoelasticity on the Stress Evolution over the Lifetime of Filament-Wound Composite Flywheel Rotors for Energy Storage |
| title_full_unstemmed | Effects of Viscoelasticity on the Stress Evolution over the Lifetime of Filament-Wound Composite Flywheel Rotors for Energy Storage |
| title_short | Effects of Viscoelasticity on the Stress Evolution over the Lifetime of Filament-Wound Composite Flywheel Rotors for Energy Storage |
| title_sort | effects of viscoelasticity on the stress evolution over the lifetime of filament wound composite flywheel rotors for energy storage |
| topic | viscoelasticity polymer composite material flywheel energy storage system flywheel failure Tsai-Wu criterion |
| url | https://www.mdpi.com/2076-3417/11/20/9544 |
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