Testing 10GHMBA steel for vessel ballistic shields

• Autorzy: Charchalis A. , Kyzioł L.
• Języki publikacji: EN

Abstrakty

EN

This paper presents the methods of testing the materials subjected to static and dynamic tensile tests, presented for 10GHMBA - E620 bainitic steel. The tests were conducted on the MTS 810.12 universal strength testing machine, a rotary hammer, a station especially designed for the conditions required for the Taylor test, an equipped ballistic pendulum and high-speed digital camera Phantom v12. The data collected in the tests are necessary for strength calculations of these constructions. The calculations are performed with the use of numerical methods and computing techniques, including constitutive equations for the performance description of a given material. Specific parameters and material constant values for the missile and the shield are accounted for in the equations. The parameters and constant values are either determined in experiments or 'selected', which is a significant issue in the case of high deformation speed. The final section presents examples of numerical simulations which enable the analysis of quick change processes which occur when a construction is subjected to strains due to strike with an object moving at a high speed, such as a 12.7 mm calibre missile moving at approx. 1000 ms-1. The knowledge of mechanical properties of materials is crucial in designing constructions exposed to direct fire and other dynamic effects. The results are presented in the form of charts and graphs.

Słowa kluczowe

EN

bainitic steel; static properties; dynamic properties; high deformation speed; impact testing machine; Taylor's test; equipped ballistic pendulum; computer simulations

• Wydawca: Łukasiewicz Research Network - Institute of Aviation ; European Science Society of Powertrain and Transport KONES Poland ; Wydawnictwo Instytutu Technicznego Wojsk Lotniczych
• Czasopismo: Journal of KONES
• Rocznik: 2011
• Tom: Vol. 18, No. 2
• Strony: 69--75
• Opis fizyczny: Bibliogr. 7 poz., rys.

Twórcy

autor

Charchalis A.

autor

Kyzioł L.

• Gdynia Maritime University Morska Street 81-87, 81-225 Gdynia, Poland, e-mail

Bibliografia

• [1] Johnson, G. R., Cook, W. M., A Constitute Model and Data for Metals Subjected to Large Strains, High Strain Rates and High Temperatures, in Proceedings of the Seventh International Symposium on Ballistic, The Huge, 541, The Netherlands 1983.
• [2] Johnson, G. R., Cook, W. H., Fracture Characteristics of Three Metals subjected to various strains, strain rates, temperatures and pressures, J Eng Mech, Vol. 21, 1985.
• [3] Lips, H. R., Weisshaupt, T., Niemeyer, W., Dynamic behavior and properties of heavy metals- experimental approach to separation of parameters in the Johnson - Cook model, Proceedings of Tenth International Symposium on Ballistics, Vol. II, San Diego, CA 1987.
• [4] Johnson, G. R., Holmquist, T. J., Evaluation of Cylinder - Impact Test Data for Constitutive Model Constatns, J. Appl. Phys., 64, 3901, 1988.
• [5] Zukas, J.A. et al., High Velocity Impact Dynamics John Wiley&Sons, Inc U.K. 1990.
• [6] Taylor, G., The use of flat-ended projectiles for determining dynamic yield stress I. Theoretical considerations. Proc. Roy. Soc., Series A194, 289-299, London 1948.
• [7] Janiszewski, J., Wykonanie badań dynamicznych właściwości mechanicznych stali 10 GHMBA za pomocą metody Taylora. Sprawozdanie WAT, Instytut Techniki Uzbrojenia, Warszawa 2009.