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JOURNALS // Problemy Fiziki, Matematiki i Tekhniki (Problems of Physics, Mathematics and Technics) // Archive

PFMT, 2022 Issue 2(51), Pages 31–37 (Mi pfmt840)

PHYSICS

Thermal elastic bending of a circular three-layer plate, associated with the Pasternak foundation

A. G. Kozel

Belarusian State University of Transport, Gomel

Abstract: An axisymmetric bending of an elastic three-layer circular plate connected to the Pasternak foundation is considered. The effect of the temperature field is taken into account. To describe the kinematics of a plate package asymmetric in thickness, the hypothesis of a broken normal is accepted. The statement of the problem and its solution are carried out in a cylindrical coordinate system. The system of equilibrium equations was obtained using the Lagrange variational method. Its general analytical solution is written out in displacements. A numerical parametric analysis of the stress-strain state of a three-layer metal-polymer plate under a uniformly distributed load has been carried out. The significant influence of temperature on the stresses in the layers is shown.

Keywords: thermoelasticity, Pasternak foundation, three-layer plate.

UDC: 539.3

Received: 23.02.2022

DOI: 10.54341/20778708_2022_2_51_31



© Steklov Math. Inst. of RAS, 2024