creep, microdefect, residual stress, large deformations, objective function, exhaustive search

In the paper the problem of calculating of the optimal loading pressure during material deformation under creep is considered. The solution of the boundary-value problem is constructed within the frameworks of the model of large elastic-creep deformations. The obtained numerical solution is used to find the optimal loading process necessary to achieve a given size of a single microdefect. The search for the optimal solution is carried out on the set of 5–order polynomials by a brute-force search. The resulting solution is analyzed graphically and compared with previously obtained results.

Maxim F. Anop,

Researcher, The Library of the Russian Academy of Sciences, Birzhevaya liniya, 1, Saint-Petersburg, 199034, Russian Federation.

Evgenii V. Murashkin,

Cand. Phys. & Math. Sci., PhD, MD, Senior Researcher, Ishlinsky Institute for Problems in Mechanics of the Russian Academy of Sciences, 101, korp. 1, pr. Vernadskogo, Moscow, 119526, Russian Federation.