Identification of pierced materials characteristics in the aspect of selected degenerated models

• Autorzy: Jamroziak K. , Bocian M.
• Języki publikacji: EN

Abstrakty

EN

A number of theoretical problems are discovered in the application of degenerated models in punching process of ballistic shields. Insufficient knowledge of dynamic behaviours of these models based on non-linear complex constitutive materials or combination of mixed rheological Maxwell models with linear elastic elements or dissipative is the main reason of the problems. In the engineering application with the influence of rheological forces the element of mass responsible for force ofinertia in dynamic loads is always applied. Taking the forces into consideration in dynamic analysis the degenerated system is necessary to use. It is also utilitarian goal of materiał properties identification in punching process with the use ofparticle mass (projectile). In this paper, the authors present further results ofresearch in this area. Suppression and dispersion of energy is the crucial phenomena in the punching process of ballistic shields with the use of small arms. Therefore the research presented in the paper concerns systems based on viscotic damping with the dry friction parameter (h). As a result ofthe research influence of h parameter on time and frequency characteristics under impact stress was estimated. Analytic calculations and simulations of the examination were validated by experimental test and measurements. With the basis on the results the final conclusions were formulated.

Słowa kluczowe

EN

analysis and modelling; light ballistic shields; materials penetration; degenerated models; identification

• 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: 2010
• Tom: Vol. 17, No. 1
• Strony: 169--176
• Opis fizyczny: Bibliogr. 9 poz., rys.

Twórcy

autor

Jamroziak K.

autor

Bocian M.

• Wrocław University of Technology Institute of Materials Science and Applied Mechanics Smoluchowskiego Street 25, 50-370 Wroclaw tel: [phone],fax: [phone],

Bibliografia

• [1] Gryboś, R., Stability of construction under impact loading, PWN, Warszawa – Poznań 1980.
• [2] Wierzbicki, T., Computing of construction dynamic load, Arkady, Warszawa 1980.
• [3] Stronge, W. J., Impact Mechanics, Cambridge University Press 2000.
• [4] Jamroziak, K., Bocian, M., Kulisiewicz, M., Piesiak, S., The punch process of machine’s units in the context of selection materials with application of some pattern degenerate, 20thScientific Conference, Trends in the Development of Heavy Duty Machines, Zakopane 2007.
• [5] Kulisiewicz, M., Modeling and identification of nonlinear mechanical systems under dynamic complex loads, Monograph, University of Technology, Wroclaw 2005.
• [6] Piesiak, S., Identification of mechanical systems in domain nonline ar and degenerated dynamical models, Monograph, University of Technology, Wroclaw 2003.
• [7] Bocian, M., Kulisiewicz, M., Jamroziak, K., Analysis of some selected models of spring-damper force interactions to pierce material process identification at high velocities, Opencast Mining, Iss. 4-5, pp.198-203, Wroclaw 2008.
• [8] Polska Norma, PN-EN 1522, Okna, drzwi żaluzje i zasłony. Kuloodporność. Wymagania i klasyfikacja. PKN, Warszawa 2000.
• [9] Polska Norma, PN-EN 1523, Okna, drzwi, żaluzje i zasłony. Kuloodporność. Metody badań.PKN, Warszawa 2000.