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Relationship between material strength and parameters of pulsed mechanical impact
Russian version
Krivosheev S. I. 1, Kuznetsov I. B.1, Adamyan Yu. E. 1, Magazinov S. G. 1, Lobachev M. I. 1
1Peter the Great Saint-Petersburg Polytechnic University, St. Petersburg, Russia
Email: ksi.mgd@mail.ru, kuznetsov_ib@inbox.ru, wiradam@rambler.ru, magazinov_sg@mail.ru, lobachev_mi@spbstu.ru
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As part of the analytical description of the deformation process, it is shown that the process of fracture under pulsed action is determined by the limiting potential energy density and the lifetime of the energy state. A transition to a brittle fracture mode under high-speed loading by a magnetic-pulse method is demonstrated for highly ductile (under static loading) polyethylene and polyethylene terephthalate. Keywords: plastic deformation, high-speed deformation, magnetic-pulse loading, controlled impact.
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