elasticity, creep, plasticity, irreversible deformations, Ivlev – Ishlinsky criterion.

This paper presents a solution to the boundary value problem of creep and plastic flow of a material of a thick-walled cylindrical pipe under conditions of application of uniform internal pressure increasing with time. In determining the mechanism of accumulation of irreversible deformations, the Ivlev-Ishlinsky criterion is used. All parameters of the stress-strain are calculated.

Burenin Anatoly Alexandrovich, Chief Scientific Employee, Corresponding Member of RAS, Institute of Metallurgy and Mechanical Engineering Far-Eastern Branch of RAS, Konsomolskon-Amur, Russia,

Kovtanyuk Larisa Valentinovna, Chief Scientific Employee, Corresponding Member of RAS,

Institute of Automation and Control Processes Far-Eastern Branch of RAS, Vladivostok, Russia,

Panchenko Galina Leonidovna, Acting Senior Researcher, Candidate of Physical and Mathematical Sciences, Institute of Automation and Control Processes Far-Eastern Branch of RAS, Vladivostok, Russia.