Wyniki wyszukiwania - Biblioteka Nauki

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Topliwe mieszaniny wybuchowe z trinitrotoluenem i dinitroanizolem : porównanie właściwości

100%

Cudziło S. , Trzciński W. A. , Dyjak S. , Nita M.

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2012

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tom Vol. 61, nr 4

281-292

PL

Porównano wrażliwość na bodźce mechaniczne i termiczne oraz wyznaczono niektóre parametry detonacyjne 2,4-dinitroanizolu (DNAN) i 2,4,6-trinitrotoluenu (TNT). Przygotowano kompozycje zawierające DNAN lub TNT w roli składników topliwych oraz 3-nitro-1,2,4-triazol-5-on (NTO) i heksogen (RDX). Przeprowadzono porównawczą analizę właściwości użytkowych tych kompozycji.

EN

Some sensitivity and performance characteristics for pure 2,4-dinitroanisole (DNAN) and 2,4,6-trinitrotoluene (TNT) as well as for melt-pour composites containing DNAN or TNT with hexogen (RDX) and 3-nitro-1,2,4-triasole-5-on (NTO) were determined (under the same conditions) and compared.

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The Reinforcement of the TNT System by a Newly-designed GAP-based Polyurethane-Urea: a Molecular Simulation Investigation

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Qian W. , Shu Y. , Ma Q. , Li H. , Wang S. , Chen X.

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2016

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tom Vol. 13, no. 2

411--426

EN

A glycidyl azide (GAP)-based polyurethane-urea (PUU) modifier used in the 1,3,5-trinitrotoluene (TNT)-based composite explosive was investigated by molecular simulation. Inter-molecular interactions were investigated using quantum chemistry calculation on the dimer of TNT and GAP-PUU, and attractive forces were found between the two molecules. The cohesive energy densities and the solubility parameters were obtained through molecular dynamics simulations combined with thermodynamic calculations on the TNT and GAP-PUU amorphous cell models, and the miscibility of the modifier in molten TNT was predicted to be good. The interaction energies and the mechanical properties were then obtained by molecular simulations and mechanical calculations on the solid-phase models of the GAP-PUU with TNT along three crystalline directions, and an improvement in the mechanical properties was predicted.

3

Analysis of Parameters of Blast Waves Generated by Explosions of 75 g TNT Charges

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Rosenkiewicz D. , Ludas M.

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tom Vol. 3, nr 1-2

83-94

EN

The paper presents test results and the analysis of blast waves parameters generated by explosions of 75 g trinitrotoluene (TNT) charges. Pressure sensors designed for measuring the passing wave overpressure were applied for the tests. An analysis of the test results and the calculations based selected empirical formulas was performed. The results of tests and calculations specify the values of permissible distances (the so called safety areas) for 75 g TNT charges.

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Analiza odporności udarowej okrętu podwodnego typu Kobben obciążonego falą ciśnienia od wybuchu miny

71%

Szturomski B. , Kiciński R.

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tom nr 3

4773--4780, CD 1

PL

W pracy analizowano odporność udarową kadłuba okrętu podwodnego typu Kobben obciążonego falą ciśnienia od niekontaktowego wybuchu miny wykonaną w programie CAE przy zastosowaniu MES. Przedstawiono sposób modelowania i specyfikę zadania szybkozmiennego jakim jest wybuch. W zadaniu uwzględniono umocnienie materiału kadłuba okrętu w funkcji prędkości odkształcenia, który opisano równaniem Johnsona-Cook’a. Falę ciśnienia modelowano w ośrodku akustycznym. W pracy zamieszczono wyniki rozkładu naprężeń w kadłubie okrętu wywołane wybuchem ładunku 100 kg TNT przed dziobem okrętu, za rufą i pod stępką w odległości 15 m.

EN

The paper analyzed impact resistance of the hull of the submarine type Kobbenburdened pressure wave from the non-contact explosion of mines made in the CAE using FEM. The way of modeling high-frequency and specificity of the task which is a blast. The task included the strengthening of the material of the hull of the ship as a function of strain rate, which is described by the equation Johnson-Cook. Pressure wave was modeled using the acoustic center. The paper presents the results of stress distribution in the hull caused the outbreak load 100 kg of TNT in front of the bow, the stern and the keel at a distance of 15 m.

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Application of LC-MSD and GC-ECD Techniques in the Analysis of Post-explosion Residues of Explosives with Content of 1,3,5-Trinitroso-1,3,5-triazinane

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Varga R. , Zeman S. , Vágenknecht J. , Koložvári M.

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tom Vol. 2, nr 3

85-96

EN

The paper deals with possible applications of the connection of liquid chromatography with atmospheric pressure chemical ionization (APCI) mass spectrometry (Agilent 1100 series LS-MSD system) and gas chromatography with electron capture detector (GC-ECD) in the analysis of some common available or improvised explosives. The analysis of selected types of individual explosives, 2,4,6-trinitrotoluene (TNT), 1,3,5-trinitroso-1,3,5-triazinane (TMTA) and analysis of their mixtures (TNT/TMTA and RDX/TMTA) in their post-explosion residues on the basis of generated characteristic mass spectra by using LC-MSD system is the aim of this work. Post-explosion analysis of TMTA and its explosive mixtures can be similarly complicated, like that of the well-known plastic explosive on the basis of pentaerythritol tetranitrate, Semtex-1A.