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V. V. Struzhanov, A. E. Chaikin

DETERMINING THE MOMENT OF DESTRUCTION OF PROTECTIVE COATINGS ON PIPES AND SPHERICAL VESSELS

DOI: 10.17804/2410-9908.2020.3.006-018

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.

Keywords: thin coating, pipe, spherical vessel, curves of equilibrium states, loss of stability, destruction, Lamé problem.

References:

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Article reference

Struzhanov V. V., Chaikin A. E. Determining the Moment of Destruction of Protective Coatings on Pipes and Spherical Vessels // Diagnostics, Resource and Mechanics of materials and structures. - 2020. - Iss. 3. - P. 6-18. -
DOI: 10.17804/2410-9908.2020.3.006-018. -
URL: http://eng.dream-journal.org/issues/content/article_275.html
(accessed: 06/22/2024).

 

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