Delayed fracture of plates under creep condition in unsteady complex stress state in the presence of aggressive medium

Lokoshchenko, A.M.; Fomin, L.V.

Статья опубликована в высокорейтинговом журнале

Информация о цитировании статьи получена из Web of Science
Статья опубликована в журнале из списка Web of Science и/или Scopus
Дата последнего поиска статьи во внешних источниках: 8 сентября 2018 г.

Авторы: Lokoshchenko A.M., Fomin L.V.
Журнал: Applied Mathematical Modelling
Том: 60
Год издания: 2018
Издательство: Elsevier BV
Местоположение издательства: Netherlands
Первая страница: 478
Последняя страница: 489
DOI: 10.1016/j.apm.2018.03.031
Аннотация: Abstract Delayed fracture of bended rectangular plate is researched under creep condition in unsteady complex stress state with consideration for the effect of an ambient medium. Using Rabotnov’s kinetic theory, time to fracture of such plate was determined during sequential bending in different planes. Piecewise constant dependences of bending moment level on time are considered. The time to fracture of the plate is determined using a fractional linear creep model. The effect of the ambient medium on the creep and the creep rupture of the plate is attributed to diffusive penetration of ambient medium elements into the material of the plate. An approximate method to solve the diffusion equation based on the introduction of a diffusion front is used to evaluate the diffusion process rate. Ambient medium effect is taken into consideration by introducing a function of cumulative average concentration into constitutive and kinetic fractional linear equations. The times to fracture while using scalar and vector damage parameters are compared. Key words Rectangular plate, bend, creep, diffusion, diffusion front, delayed fracture, fractional linear model, scalar damage parameter, vector damage parameter
Добавил в систему: Локощенко Александр Михайлович

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Delayed fracture of plates under creep condition in unsteady complex stress state in the presence of aggressive mediumстатья

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