scholarly journals Analysis of a self-centring detonation wave generator

2021 ◽  
pp. 34-47
Author(s):  
Waldemar Trzciński ◽  
Józef Paszula ◽  
Leszek Szymańczyk
Keyword(s):  
Theoretical Analysis ◽  
Detonation Wave ◽  
Wave Front ◽  
Point Location ◽  
Wave Fronts ◽  
Initiation Point ◽  
X Ray ◽  
Detonation Wave Front ◽  
Main Charge ◽  
Wave Generator

The aim of the study was to determine the parameters of a detonator generating a self-centring detonation wave, based on experimental and theoretical analysis. The methods for manufacturing selfcentring detonation wave generators available in literature were reviewed and a detonator comprised of two explosives was proposed. The detonator geometry was analysed for its ability to centre the detonation wave. A physical detonator model was created and the detonation wave front downstream of the detonator, analysed and the detonator’s capability to compensate an off-centre detonation initiation, evaluated. The wave fronts were recorded using pulsed x-ray radiography. The study showed that the proposed detonator provides a symmetrical initiation of the main charge for the initiation point (location) offset, lower than the assumed maximum offset.

scholarly journals The Influence of Pipe Bending Curvature on H2-O2 Gaseous Detonation Wave Front

2021 ◽  
Vol 11 (9) ◽  
pp. 3951
Author(s):  
Hui Zhao ◽  
Huiyuan Li ◽  
Haitao Zhao ◽  
Leisheng Li ◽  
Jian Li
Keyword(s):  
Detonation Wave ◽  
Pressure Distribution ◽  
Wave Front ◽  
Cell Size ◽  
Chemical Reaction ◽  
Cellular Structure ◽  
Gaseous Detonation ◽  
External Boundary ◽  
Propagation Characteristics ◽  
Detonation Wave Front

The influence of different bend curvatures on the detonation wave propagation was analyzed by an advanced numerical simulation system. The mechanism of propagation properties is revealed by cellular structure, internal and external boundary pressure distribution, propagation process of detonation wave and chemical reaction. The cellular structure and detonation wave front of bend with different curvature are very different. The simulation results show that the detonation wave with regular cell structure propagating through the curved parts induces detonation cell size increased by diffraction near the inner wall while detonation reflected on the bottom surface resulting in decrease of cell size. Detonation wave was affected by the rarefaction wave and compression wave in the bent pipe. The pressure distribution of the bend shows that the peak pressure in the 450 curvature is the largest, which should be paid more attention in industrial design. The chemical reaction could indicate the propagation characteristics of detonation wave, and different propagation characteristics have different profiles of chemical components.

Propagation phenomena on the detonation wave front

1993 ◽  
Vol 71 (5) ◽  
pp. 712-714 ◽  
Author(s):  
J. M. Chevalier ◽  
N. Carion ◽  
J. C. Protat ◽  
J. C. Redasse
Keyword(s):  
Detonation Wave ◽  
Wave Front ◽  
Detonation Wave Front

On detonation wave front structure of consensed high explosives

1998 ◽  
Author(s):  
A. V. Fedorov ◽  
A. V. Menshikh ◽  
N. B. Yagodin
Keyword(s):  
Detonation Wave ◽  
Wave Front ◽  
High Explosives ◽  
Detonation Wave Front ◽  
Front Structure

Design and Penetration Performance of Annular Shaped Charge Structure

2008 ◽  
Vol 33-37 ◽  
pp. 1175-1180
Author(s):  
Wang Cheng ◽  
Tian Bao Ma ◽  
Jian Guo Ning
Keyword(s):  
Detonation Wave ◽  
Wave Front ◽  
Shaped Charge ◽  
Penetration Process ◽  
Charge Structure ◽  
Detonation Wave Front ◽  
Numerical Studies ◽  
External Charge

Based on the principle of the equivalent momentum of the corresponding elements for internal and external liners, annular shaped charge structure is proposed. The generatrix analytical equations for the external surfaces of the external liner and external charge are deduced. Experimental and numerical studies are conducted to investigate the formation and penetration process of the jet for the annular shaped charge under different initiation radiuses, and the initiation radius corresponding to the detonation wave front matched with the liner is optimized. At this radius, shaped charge can form an ideal cylindrical jet. Moreover, the diameter of the jet approximates the theoretical diameter of the jet, and has satisfactory symmetry and focus.

Motion of explosion products behind a detonation wave front

1985 ◽  
Vol 21 (4) ◽  
pp. 471-474 ◽  
Author(s):  
V. V. Dorokhin ◽  
V. N. Zubarev ◽  
Yu. K. Orekin ◽  
N. V. Panov ◽  
N. L. Shaboldina
Keyword(s):  
Detonation Wave ◽  
Wave Front ◽  
Explosion Products ◽  
Detonation Wave Front

On the Stability of the Detonation Wave Front in the High Explosive Liquid Mixture Tetranitromethane/Nitrobenzene

2010 ◽  
Vol 28 (sup1) ◽  
pp. 205-215 ◽  
Author(s):  
A. V. Fedorov ◽  
A. L. Mikhaylov ◽  
A. V. Men'Shikh ◽  
D. V. Nazarov ◽  
S. A. Finyushin ◽  
...  
Keyword(s):  
Detonation Wave ◽  
Wave Front ◽  
High Explosive ◽  
Liquid Mixture ◽  
Detonation Wave Front ◽  
The Stability
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