Analysis of selected structural components subjected to blast wave

• Autorzy: Mazurkiewicz Ł. , Małachowski J.
• Języki publikacji: EN

Abstrakty

EN

The phenomenon of high-energy explosion of a substance such as the mixture of flammable gases, explosives, etc. is highly exothermic chemical reaction that causes a blast wave consisting of hot gases at high pressure. Very complex nature of the phenomenon of detonation, affects the need for advanced methods of analysis. In the present work analysis of two steel columns (I-section and tubular section) subjected to the blast wave are presented. The columns have similar values of the moments of inertia and mass per unit length. To describe the complex phenomena occurring in gas medium the Eulerian formulation was used. The steel structures were described using Lagrangian formulation. Interaction between domains was achieved by numerical coupling algorithm with implemented penalty function. From the results from all the analysis cases, the dynamic response of structural elements was obtained. Permanent deformation and the amount of absorbed energy are of special interest in this study. The resultant velocity vectors were also presented to illustrate the characteristic of blast wave propagation.

Słowa kluczowe

EN

ALE formulation; blast wave; dynamic response; structural component

• 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: 2012
• Tom: Vol. 19, No. 1
• Strony: 267--272
• Opis fizyczny: Bibliogr. 7 poz., rys.

Twórcy

autor

Mazurkiewicz Ł.

autor

Małachowski J.

• Military University of Technology Faculty of Mechanical Engineering Department of Mechanics and Applied Computer Science Kaliskiego Street 2, 00-908 Warsaw, Poland tel.: [phone], fax: [phone],

Bibliografia

• [1] Worlwide Incidents Tracking Systems, National Counterterrorism Center (NCTC), https://wits.nctc.gov
• [2] Global Terrorism Database (GTD), http://www.start.umd.edu/gtd/features/GTD Data- Rivers.aspx
• [3] Wlodarczyk, E., Fundamentals of detonation, Military University of Technology, Warsaw 1995.
• [4] Malachowski, J., Modelowanie i badania interakcji ciało stałe-gaz przy oddziaływaniu impulsu ciśnienia na elementy konstrukcji rurociągu, BEL Studio, Warszawa 2010.
• [5] Malachowski, J., Influence of HE location on elastic-plastic tube response under blast loading, Shell Structures Theory and Applications, Vol. 2, pp. 179-182, 2010.
• [6] Hallquist, J. O., LS-Dyna, Theory manual, Livermore, California 2006.
• [7] Mazurkiewicz, Ł., Małachowski, J., I-Beam Structure Under Blast Loading – Eulerian Mesh Density Study, Journal of KONES Powertrain and Transport, Vol. 18, No. 3, pp. 245-252, 2011.