Deformation and damage of nuclear power station fuel elements under cyclic loading
Deformation and damage of nuclear power station fuel element shells under irradiation and cyclic loading due vibrations are studied. Constitutive equations include dependencies for a creep-damage equation with a scalar damage parameter, as well as terms for thermal and irradiation creep strains, ela...
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| Veröffentlicht in: | Journal of strain analysis for engineering design 2019-07, Vol.54 (5-6), p.348-359 |
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| container_issue | 5-6 |
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| container_title | Journal of strain analysis for engineering design |
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| creator | Breslavsky, Dmitry Chuprynin, Aleksandr Morachkovsky, Oleg Tatarinova, Oksana Pro, Will |
| description | Deformation and damage of nuclear power station fuel element shells under irradiation and cyclic loading due vibrations are studied. Constitutive equations include dependencies for a creep-damage equation with a scalar damage parameter, as well as terms for thermal and irradiation creep strains, elastic, thermal, and swelling strains. The acceleration of the creep-damage process due to cyclic variation of internal pressure is considered with a dynamic creep model, for which constitutive equations are derived using the method of asymptotic expansions and averaging over a period of cyclic loading. Stress and strain states in the fuel element shell are determined by use of an in-house finite element method creep-damage code for shells of revolution. Results show the essential variation in the initially symmetric fuel element shell form, as well as the acceleration of creep-damage processes due to the cyclic pressure. |
| doi_str_mv | 10.1177/0309324719874923 |
| format | Article |
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Constitutive equations include dependencies for a creep-damage equation with a scalar damage parameter, as well as terms for thermal and irradiation creep strains, elastic, thermal, and swelling strains. The acceleration of the creep-damage process due to cyclic variation of internal pressure is considered with a dynamic creep model, for which constitutive equations are derived using the method of asymptotic expansions and averaging over a period of cyclic loading. Stress and strain states in the fuel element shell are determined by use of an in-house finite element method creep-damage code for shells of revolution. 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| ispartof | Journal of strain analysis for engineering design, 2019-07, Vol.54 (5-6), p.348-359 |
| issn | 0309-3247 2041-3130 |
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| source | SAGE Complete A-Z List |
| subjects | Acceleration Asymptotic methods Asymptotic series Constitutive equations Constitutive relationships Cyclic loads Deformation Finite element method Internal pressure Nuclear fuel elements Nuclear fuels Nuclear power plants Radiation damage Shells of revolution |
| title | Deformation and damage of nuclear power station fuel elements under cyclic loading |
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