Deformation Phenomena in the Collapse of Metallic Cylindrical Shells. Buckling

• Published in: Combustion, explosion, and shock waves Vol. 55; no. 4; pp. 456 - 465
• Main Authors: Zel’dovich, V. I., Frolova, N. Yu, Kheifets, A. E., Khomskaya, I. V., Degtyarev, A. A., Shorokhov, E. V., Smirnov, E. B., Dolgikh, S. M., Koval’, A. V.
• Format: Journal Article
• Language: English
• Published: Moscow Pleiades Publishing 01.07.2019; Springer Nature B.V
• Subjects: Buckling; Classical and Continuum Physics; Classical Mechanics; Collapse; Control; Cylindrical shells; Dependence; Dynamical Systems; Engineering; Material properties; Physical Chemistry; Physics; Physics and Astronomy; Shell stability; Shells; Structural members; Vibration; steel; high-rate deformation; macrostructure; collapse of cylindrical shells; instability; copper; shock-wave loading
• ISSN: 0010-5082; 1573-8345
• DOI: 10.1134/S0010508219040129

The structural mechanisms of buckling and the deformation behavior of copper and steel cylindrical shells (pipes) during collapse under the action of an explosion are studied. The dependence of deformation behavior on the transverse dimensions of the shell and properties of the loaded material is described. It is established that the stability of radial collapse depends on absolute dimensions of the shell rather than relative dimensions, with the collapse of large-diameter shells occurring more stably. It is demonstrated that the collapse stability is violated due to the formation of a characteristic pattern of localized strain in the sample, consisting of homogeneous, orderly arranged structural elements whose dimension depends little on the material properties and experimental conditions. A criterion for stable radial collapse that relates the characteristic dimensions of the structural element of localized strain and the shell radius is proposed.