Short Communication
Mechanics of Solids

Estimation of the velocity field in a continuous elastoplastic medium during a camouflet explosion

V. A. Sednev^a, S. L. Kopnyshev^a, A. V. Sednev<sup>b

a</sup> Fire Fighting Service of State Academy of Emercom of Russia, Moscow, 129366, Russian Federation
^b Bauman Moscow State Technical University, Moscow, 105005, Russian Federation

Abstract: The paper presents a solution to the centrally symmetric problem of determining the velocity field in a continuous elastoplastic medium during a camouflet explosion, assuming that the motion of the camouflet cavity is non-oscillatory and that the medium is incompressible in both the plastic and elastic regions. Dependencies for determining the size of the expansion zones and plastic deformation of the medium are obtained. The solution is based on the “camouflet equation” — a relationship for determining the pressure on the contact surface of the expanding spherical cavity due to internal pressure.

Keywords: elastoplastic medium, camouflage cavity, velocity field, expansion, camouflage explosion.

UDC: 539.3

MSC: 74L10, 74C05

Received: March 9, 2023
Revised: April 28, 2023
Accepted: May 25, 2023
First online: June 21, 2023

DOI: 10.14498/vsgtu2004

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