Open AccessDetermining the moment of destruction of protective coatings on pipes and spherical vessels
Author(s) -
В. В. Стружанов,
A. E. Chaikin
Publication year - 2020
Publication title -
diagnostics, resource and mechanics of materials and structures
Language(s) - English
Resource type - Journals
ISSN - 2410-9908
DOI - 10.17804/2410-9908.2020.3.006-018
Subject(s) - softening , materials science , elasticity (physics) , coating , moment (physics) , mechanics , drop (telecommunication) , plane stress , composite material , deformation (meteorology) , structural engineering , classical mechanics , physics , engineering , mechanical engineering , finite element method
An analytical method is developed to determine the moment of destruction of thin coatings on pipes and spherical vessels. The coating material works at the stage of elasticity; it has the property of strain softening, that is, destruction with increasing deformation occurs in the process of stress drop. The properties of the coating material are described by convex-concave potentials both under uniaxial tension and in a plane stress state. To determine the moment of destruction, methods of the mathematical theory of catastrophes are applied, which allow one to find all the equilibrium positions of systems and the point of loss of stability of the deformation process.