Numerical investigation of the influence of a rigid obstacle on the multiple reflected pressure impulse

• Autorzy: Barnat W. , Panowicz R. , Niezgoda T.
• Języki publikacji: EN

Abstrakty

EN

The article presents the case of multiple reflection ofa blast wave from a rigid obstacle. The pressure impulse was generated in the Euler domain according to Taylor-Sedov theory. Additionally, there the results of numerical and analytical investigations on the behaviour of the reflected pressure impulse from the flat stiff obstacle were discussed. The analytical considerations are pursuant to the accessible literature. This case is identical with the explosion under a flat bottom of the tank-type vehicle or BWP. All the considered obstacles which are influence by the pressure impulse are similar to the construction of the vehicles used by Polish Army. As it was mentioned above, the numerical investigations were supported by analytical modelsfrom the scientific literature. In the previous papers, the authors conducted the numerical and experimental investigations on the flat blast wave. Those papers concentrated on the selection of the Euler domain parameters and parameters describing an explosive charge for numerical analyses. Additionally, the parameters of the boundary elements of the Euler domain were selected in order to unable the uncontrolled influence of gases. The innovation presented in the paper is the description of the issue of the numerical problem of multiple pressure impulse reflection from a rigid obstacle. The presented papers aim at increasing the safety of the military vehicles crews during the stabilisation missions in Iraq and Afghanistan.

Słowa kluczowe

EN

pressure impulse; analytical model; FE analysis; influence of the obstacle on the reflected wave

• 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. 4
• Strony: 45--54
• Opis fizyczny: Bibliogr. 10 poz., rys.

Twórcy

autor

Barnat W.

autor

Panowicz R.

autor

Niezgoda T.

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

Bibliografia

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• [4] Malecki, I., Teoria fal akustycznych, IPPT PAN, Warszawa 1964.
• [5] Stiepanow, G., Uprugo–płasticzeskoje deformowanie i razruszienie materiałow pri impulsnom nagruzienii, Kiev Naukowaja Dumka, 1991.
• [6] Łęgowski, Z., Rafa, J., Modelowanie wielokrotnych oddziaływań powybuchowych fal uderzeniowych na elementy konstrukcji, I Krajowa Konferencja Odporność Udarowa Konstrukcji, Gdynia 1993.
• [7] Baker, W. E., Explosions in Air, University of Texas Press, Austin and London, 1973.
• [8] Borkowski, W., Rybak, P., Badania odporności kadłubów wozów bojowych na obciążenia impulsowe, I Krajowa Konferencja Odporność Udarowa Konstrukcji, Gdynia 1993.
• [9] Dytran Theory Manual, 2004; LS-DYNA theoretical manual, 1998.
• [10] Barnat, W., Numeryczno doświadczalna analiza złożonych warstw ochronnych obciążonych falą uderzeniowa wybuchu, Bell Studio 2009.