A Theory of Autofrettage for Open-Ended, Polar Orthotropic Cylinders

Autofrettage is a widely used process to enhance the fatigue life of holes. In the theoretical investigation presented in this article, a semi-analytic solution is derived for a polar, orthotropic, open-ended cylinder subjected to internal pressure, followed by unloading. Numerical techniques are only necessary to solve a linear differential equation and evaluate ordinary integrals. The generalized Hooke's law connects the elastic portion of strain and stress. The flow theory of plasticity is employed. Plastic yielding is controlled by the Tsai-Hill yield criterion and its associated flow rule. It is shown that using the strain rate compatibility equation facilitates the solution. The general solution takes into account that elastic and plastic properties can be anisotropic. An illustrative example demonstrates the effect of plastic anisotropy on the distribution of stresses and strains, including residual stresses and strain, for elastically isotropic materials.

Авторы
Rynkovskaya M. 1 , Alexandrov S.2, 3 , Lang L.H.2
Журнал
Издательство
MDPI AG
Номер выпуска
2
Язык
Английский
Статус
Опубликовано
Номер
280
Том
11
Год
2019
Организации
  • 1 Peoples Friendship Univ Russia, RUDN Univ, Dept Civil Engn, 6 Miklukho Maklaya St, Moscow 117198, Russia
  • 2 Beihang Univ, Sch Mech Engn & Automat, 37 Xueyuan Rd, Beijing 100191, Peoples R China
  • 3 Ishlinsky Inst Problems Mech, 101-1 Prospect Vernadskogo, Moscow 119526, Russia
Ключевые слова
residual stress; residual strain; open-ended cylinder; autofrettage
Дата создания
19.07.2019
Дата изменения
19.07.2019
Постоянная ссылка
https://repository.rudn.ru/ru/records/article/record/39214/
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