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Mathematical notes of NEFU, 2022 Volume 29, Issue 2, Pages 31–42 (Mi svfu348)

Mathematics

Solvability of an equilibrium problem for a thermoelastic Kirchhoff-Love plate with an oblique crack

N. P. Lazarev

Research Institute of Mathematics of North-Eastern Federal University named after M. K. Amosov

Abstract: We formulate a variational problem of equilibrium for a thermoelastic Kirchhoff-Love plate with an oblique crack. In the initial state, the crack is given by a suficiently smooth surface, while opposite faces of the crack are in contact with each other. A general nonpenetration condition for oblique cracks is used, which was proposed by professor A. M. Khludnev for the Kirchhoff-Love plate in the framework of elastic constitutive relations. The peculiarity is that the condition is nonlocal. On the outer edge of the plate, conditions of rigid clamping are imposed. An initial temperature distribution is considered given. The solvability of the problem is proved under the assumption that the thermal expansion parameter is sufficiently small. The equilibrium equations are obtained in the subdomain corresponding to the part of the plate without the crack.

Keywords: oblique crack, nonpenetration, thermoelastic plate, variational problem, Kirchhoff–Love plate.

UDC: 539.375

Received: 14.03.2022
Accepted: 31.05.2022

DOI: 10.25587/SVFU.2022.56.39.003



© Steklov Math. Inst. of RAS, 2026