Dynamic behaviour of a metallic cylinder striking a rigid target

• Autorzy: Włodarczyk E. , Jackowski A. , Sarzyński M.

Warianty tytułu

PL

Dynamiczne zachowanie się metalowego walca uderzającego w sztywną tarczę

• Języki publikacji: EN

Abstrakty

EN

The initial-boundary value problem of the one-dimensional dynamical plastic deformation within the scope of large strain of a metallic cylindrical rod has been analytically solved in a closed form. The deformation of the rod has been caused by its normal impact on rigid target. The rod material in the deformed part is defined by incompressible, rigid-plastic, linear strain hardening model. A rigid-plastic, strain hardening material model provided better correlation with experimental data than perfectly-plastic model. The results presented in this paper have applicable values. Derived in the paper, closed analytical relations, written by elementary functions, give researchers and engineers insight into interaction of the physical parameters of the rod during the impact process and post-impact one.

PL

Rozwiązano analitycznie jednowymiarowe zagadnienie dynamicznej deformacji, z dużymi odkształceniami plastycznymi metalowego cylindrycznego pręta, uderzającego prostopadle w sztywną tarczę. Materiał pręta modelowano w strefie odkształceń plastycznych nieściśliwym ośrodkiem sztywno-plastycznym z liniowym wzmocnieniem. Sztywno-plastyczny model z liniowym wzmocnieniem zapewnia dobrą korelację wyników teoretycznych z eksperymentalnymi i w sposób istoty upraszcza rozwiązanie problemu. Zdaniem autorów, wyniki prezentowane w pracy mają aplikacyjne walory. Wyprowadzone zamknięte analityczne relacje, zapisane elementarnymi funkcjami dają badaczom i inżynierom bezpośredni wgląd we wzajemne oddziaływania między parametrami pręta podczas procesu zderzenia i po jego zakończeniu.

Słowa kluczowe

EN

dynamics; rod dynamics; Taylor impact; large strains; strain hardening

PL

dynamika; dynamika pręta; test Taylora; odkształcenia duże; wzmocnienie odkształceniowe

• Wydawca: Wojskowa Akademia Techniczna im. Jarosława Dąbrowskiego
• Czasopismo: Biuletyn Wojskowej Akademii Technicznej
• Rocznik: 2012
• Tom: Vol. 61, nr 4
• Strony: 75--91
• Opis fizyczny: Bibliogr. 34 poz., tab., wykr.

Twórcy

autor

Włodarczyk E.

autor

Jackowski A.

autor

Sarzyński M.

• Military University of Technology, Faculty of Mechatronics and Aviation, 00-908 Warsaw, 2 Kaliskiego Str., Poland,

Bibliografia

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