Experimental analysis of density and compressive strain of porous metal with the use of Taylor test

• Autorzy: Włodarczyk E. , Sarzyński M.
• Języki publikacji: EN

Abstrakty

EN

The article presents a new experimental method of analysis of density and longitudinal engineering compressive strain (LECS) in porous ductile rod, plastically deformed with a Taylor direct impact experiment (Taylor DIE). Two essential singularities in the distribution of the LECS are revealed, namely: maximum of the LECS εr max occurs near the rod striking end (Fig. 2), and at high impact velocities (U > 100 m/s) εr max decreases along with an increase of the rod initial porosity, this behaviour is inverse to that under static loading. The dynamical density – LECS curves for porous copper are also presented in the paper. According to the authors’ best knowledge, these singularities have not been published in available literature so far.

Słowa kluczowe

EN

porous metals; dynamical density; longitudinal engineering compressive strain curves; Taylor direct impact experiment

• Wydawca: Instytut Podstawowych Problemów Techniki PAN
• Czasopismo: Archives of Mechanics
• Rocznik: 2014
• Tom: Vol. 66, nr 4
• Strony: 245--256
• Opis fizyczny: Bibliogr. 9 poz., rys., tab., wykr.

Twórcy

autor

Włodarczyk E.

• Faculty of Mechatronics and Aviation Military University of Technology Warsaw, Poland

autor

Sarzyński M.

• Faculty of Mechatronics and Aviation Military University of Technology Warsaw, Poland

Bibliografia

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• 3. E.H. Lee, S.J. Tupper, Analysis of plastic deformation in a steel cylinder striking a rigid target, J. Appl. Mech. Trans. ASME, 21, 63–70, 1954.
• 4. J.B. Hawkyard, D. Eaton, W. Johnson, The mean dynamic yield strength of Cooper and low carbon steel at elevated temperatures from measurements of the mushrooming of flat-ended projectiles, Int. J. Mech. Sci., 10, 929–948, 1968.
• 5. J.B. Hawkyard, A theory for the mushrooming of flat-ended projectiles impinging on a Flat rigid anvil, using energy consideration, Int. J. Mech. Sci., 11, 313–333, 1969.
• 6. S.E. Jones, A.J. Drinkard, W.K. Rule, L.L. Wilson, An elementary theory for the Taylor impact test, Int. J. Impact Eng., 21, 1–13, 1998.
• 7. G. Lu, B. Wang, T. Zhang, Taylor impact test for ductile porous materials – Part 1: theory, Int. J. Impact Eng., 25, 981–991, 2001.
• 8. B. Wang, T. Zhang, G. Lu, Taylor impact test for ductile porous materials – Part 2: experiments, Int. J. Impact Eng., 28, 499–511, 2003.
• 9. E. Włodarczyk, M. Sarzyński, Analysis of dynamic parameters in a metal cylindrical rod striking a rigid target, Journal of Theoretical and Applied Mechanics (JTAM), 51, 4, 847–857, 2013.