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| Description
| - The paper deals with numerical 3D simulation, through the code LS-DYNA, of the effects caused by air blast waves generated by cylindrical TNT charges (the mass of 25g and 50g) which are differently oriented respect to the pressure gauges placed relatively close to the charges (approximately 800 mm and 840 mm from the charges). As the first step for these simulations, the numerical study has been concentrated on the verification of the state equations for TNT and air continuum. It has been concluded that the JWL equation of state and ideal gas equation of state were proper representations for TNT and air respectively. Then, simple formulae for various oriented charges have been developed and verified. These formulae make possible to represent the original cylindrical charges like equivalent 3D ellipsoids (this approach is very important in order to obtain stable computational mesh). The final numerical simulations have been compared with the original experiments performed at Military University of Tech
- The paper deals with numerical 3D simulation, through the code LS-DYNA, of the effects caused by air blast waves generated by cylindrical TNT charges (the mass of 25g and 50g) which are differently oriented respect to the pressure gauges placed relatively close to the charges (approximately 800 mm and 840 mm from the charges). As the first step for these simulations, the numerical study has been concentrated on the verification of the state equations for TNT and air continuum. It has been concluded that the JWL equation of state and ideal gas equation of state were proper representations for TNT and air respectively. Then, simple formulae for various oriented charges have been developed and verified. These formulae make possible to represent the original cylindrical charges like equivalent 3D ellipsoids (this approach is very important in order to obtain stable computational mesh). The final numerical simulations have been compared with the original experiments performed at Military University of Tech (en)
- Příspěvek se zabývá numerickou 3D simulací efektů, vyvolaných působením vzdušné rázové vlny na blízké okolí. Simulace byla zaměřena na studium charakteru vzdušné rázové vlny generované detonací cylindrických náloží kondenzované výbušiny TNT v závislosti na jejich osové orientaci. Aplikace 3D explicitního dynamického kódu LS-DYNA, založeného na metodě konečných prvků, ukázala možnosti, které metoda v této oblasti poskytuje. Výstupy výýpočtové simulace byly porovnvány s výsledky praktických experimentů. Na základě tohoto porovnání byly odvozeny a ověřeny jednoduché formule pro rozměry idealizovaných náloží, které umožňují numerické ocenění směrového účinku obecných cylindrických náloží TNT na blízké okolí. (cs)
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| Title
| - Vliv orientace nálože TNT na dosahované efekty VRV - numerická simulace s využitím LS-DYNA (cs)
- EFFECT OF TNT CHARGES ORIENTATION ON GENERATED AIR BLAST WAVES- NUMERICAL SIMULATION USING LS-DYNA
- EFFECT OF TNT CHARGES ORIENTATION ON GENERATED AIR BLAST WAVES- NUMERICAL SIMULATION USING LS-DYNA (en)
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| skos:prefLabel
| - Vliv orientace nálože TNT na dosahované efekty VRV - numerická simulace s využitím LS-DYNA (cs)
- EFFECT OF TNT CHARGES ORIENTATION ON GENERATED AIR BLAST WAVES- NUMERICAL SIMULATION USING LS-DYNA
- EFFECT OF TNT CHARGES ORIENTATION ON GENERATED AIR BLAST WAVES- NUMERICAL SIMULATION USING LS-DYNA (en)
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| skos:notation
| - RIV/00216275:25310/04:00003257!RIV08-MSM-25310___
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| http://linked.open.../vavai/riv/strany
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| http://linked.open...avai/riv/aktivita
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| http://linked.open...avai/riv/aktivity
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| http://linked.open...vai/riv/dodaniDat
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| http://linked.open...aciTvurceVysledku
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| http://linked.open.../riv/druhVysledku
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| http://linked.open...iv/duvernostUdaju
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| http://linked.open...titaPredkladatele
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| http://linked.open...dnocenehoVysledku
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| http://linked.open...ai/riv/idVysledku
| - RIV/00216275:25310/04:00003257
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| http://linked.open...riv/jazykVysledku
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| http://linked.open.../riv/klicovaSlova
| - detonation effect; TNT; orientation of the charge; pressure; air shock wave; numerical simulation; FEM; LS-DYNA (en)
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| http://linked.open.../riv/klicoveSlovo
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| http://linked.open...ontrolniKodProRIV
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| http://linked.open...v/mistoKonaniAkce
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| http://linked.open...i/riv/mistoVydani
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| http://linked.open...i/riv/nazevZdroje
| - Proceeding of the 7th Seminar %22New Trends in Research of Energetic Materials%22
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| http://linked.open...in/vavai/riv/obor
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| http://linked.open...ichTvurcuVysledku
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| http://linked.open...cetTvurcuVysledku
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| http://linked.open...UplatneniVysledku
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| http://linked.open...iv/tvurceVysledku
| - Vávra, Pavel
- Adamík, Vladislav
- Vágenknecht, Jiří
- Trcziński, Waldemar
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| http://linked.open...vavai/riv/typAkce
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| http://linked.open.../riv/zahajeniAkce
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| number of pages
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| http://purl.org/ne...btex#hasPublisher
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| https://schema.org/isbn
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| http://localhost/t...ganizacniJednotka
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