Radial Blast Prediction for High Explosive Cylinders initiated at Both Ends

Abstract

This paper presents experimental results for the double ended initiation of cylindrical, explosive charges. Bare cylindrical charges of PE4 (RDX/binder 88/12 %) were used with length to diameter ratios of 1/3.7 to 5.75/1 and masses of 0.25 to 0.45 kg. Pressure measurements were taken at distances of 1 to 3.5 m in the radial direction. It was found that it was possible to predict the peak overpressure in the radial direction using P=K′ M(L/D)1/3R−3. M is the mass of explosive, L the length of the explosive charge, D the diameter of the explosive charge, and R the distance from the charge. For PE4, K′=2251 kPa m3 kg−1 for all length to diameter ratios. The double ended initiation gives a peak overpressure 1.6 times that for single ended initiation. The impulse for double ended initiation was found to be the same as for single ended initiated charges.

Emprego De Química Computacional Na Verificação E Validação Da Pressão De Detonação De Explosivo Plástico-PBX

“…O fator de forma do explosivo foi fixado como uma seção cilíndrica com o objetivo de simular a cabeça de guerra de um armamento. 19 A detonação foi iniciada na parte superior do explosivo. A Figura 1 apresenta os corpos de prova dos explosivos estocados, nos quais é possível notar os reforçadores já posicionados na parte superior do corpo de prova.…”

Blast Wave Shaping by Altering Cross‐Sectional Shape

“…The geometry of an explosive charge significantly affects energy distribution based on blast overpressure versus time data recorded around spherical and cylindrical charges [1][2][3][4][5][6][7][8][9][10][11][12][13][14][15][16]. Baker commented that the highest blast wave overpressure occurred in the orientation with the highest presented surface area [17,18].…”