Тип публикации: доклад, тезисы доклада, статья из сборника материалов конференций
Конференция: International Conference on Lavrentyev Readings on Mathematics, Mechanics and Physics; Novosibirsk; Novosibirsk
Год издания: 2020
Идентификатор DOI: 10.1088/1742-6596/1666/1/012069
Аннотация: An approach has been developed to estimate the lifetime of a composite overwrapped pressure vessel under creep conditions. Creep tests of unidirectional composite material based on T1000 carbon fibers and epoxy resin were conducted at high temperatures. Experimental creep curves were obtained and the creep rate for each specimen waПоказать полностьюs determined. A numerical analysis of creep of a composite overwrapped pressure vessel subjected to a constant pressure was carried out. Time-strain curves are obtained for each characteristic point in the composite shell. The strains range up to 12.5%. The curves of relaxation of tensile stress in a composite overwrapped pressure vessel are obtained. The stress gradually decreases from 926 to 564 MPa. The structure of the vessel considered remains stable without critical strains and stresses after 50 years of exploitation. Using the proposed modeling approach of a composite overwrapped pressure vessel, taking into account the effect of creep in the composite shell, it is possible to evaluate the lifetime of the structure.
Журнал: Journal of Physics: Conference Series
Выпуск журнала: 1666
Номера страниц: 012069
Издатель: IOP Publishing Ltd