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Calculation of Stresses Initiated by an Electrical Explosion of Conductors in a Composite Thick-Walled Cylinder

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Abstract

In this paper, we present an analysis of the dynamic loading of a material carried out by the method of electrical explosion of conductors (EEC). A composite cylinder, which is a thick-walled polymethyl methacrylate cylinder with an axial hole that is pressed into an aluminum shell, is selected as the experimental sample. The sample is loaded by applying an electrical voltage to a conductor in the form of a copper wire placed inside the axial hole of the sample. A state equation for an electrical explosion of the conductor is obtained; the experimental and calculated dependences of pressure in the air channel on the expansion coefficient of the EEC products are plotted. A theoretical model that describes the change in radial stresses arising during loading with allowance for the boundary and initial conditions is developed. The accuracy of the model is substantiated by comparing the obtained results with experimental data. The circumferential stress at which the aluminum shell ruptures directly is estimated.

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Funding

The work was carried out using institutional funding. No special financing was received.

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Authors and Affiliations

  1. St. Petersburg State University, 199034, St. Petersburg, Russia

    V. M. Kats, V. A. Morozov & Ya. A. Sevastyanov

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  1. V. M. Kats
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  2. V. A. Morozov
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  3. Ya. A. Sevastyanov
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Correspondence to V. M. Kats, V. A. Morozov or Ya. A. Sevastyanov.

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Translated by A. Ivanov

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Kats, V.M., Morozov, V.A. & Sevastyanov, Y.A. Calculation of Stresses Initiated by an Electrical Explosion of Conductors in a Composite Thick-Walled Cylinder. Vestnik St.Petersb. Univ.Math. 56, 586–593 (2023). https://doi.org/10.1134/S1063454123040192

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  • DOI: https://doi.org/10.1134/S1063454123040192

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