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Influence of Shape of Buried Explosive Charge on Crater Formation and Blast Wave Propagation
https://orcid.org/http://orcid.org/0000-0002-1267-6425
https://orcid.org/http://orcid.org/0000-0001-5166-2547
The effect of explosion on an above-and under-ground structure is rapidly gaining attention from the research community in past years. However, the majority of studies simplify the testing conditions by considering the shape of the explosive as spherical. Certain pertinent studies have proved that the shock waves generated by spherical and non-spherical explosive charges are distinctly different. However, these studies essentially consider free-air blast conditions and not buried explosions. Since the blast mechanisms involved in these two scenarios are vastly different, the variation laws derived from studies on free-air blasts cannot be applied directly to buried explosion conditions. Thereby, this study aims to investigate the effect of the shape of buried explosive charge on the blast wave propagation and shape of the crater. Two shapes of explosive charge are considered in this study: spherical and cylindrical [with varying diameter-to-length ratios (D/L)]. The results show that while the spherical charge produces an isotropic shock waveform, cylindrical charges with varying D/L ratios generate an oblong-shaped waveform. The shape of the shock wave gets elongated along the axis of the cylinder as the D/L ratio reduces, however, the magnitude of pressure decreases. Though the variation in the shape of explosive charge has a significant effect on the blast wave propagation, it has minimal effect on the shape of the crater.
Influence of Shape of Buried Explosive Charge on Crater Formation and Blast Wave Propagation
https://orcid.org/http://orcid.org/0000-0002-1267-6425
https://orcid.org/http://orcid.org/0000-0001-5166-2547
The effect of explosion on an above-and under-ground structure is rapidly gaining attention from the research community in past years. However, the majority of studies simplify the testing conditions by considering the shape of the explosive as spherical. Certain pertinent studies have proved that the shock waves generated by spherical and non-spherical explosive charges are distinctly different. However, these studies essentially consider free-air blast conditions and not buried explosions. Since the blast mechanisms involved in these two scenarios are vastly different, the variation laws derived from studies on free-air blasts cannot be applied directly to buried explosion conditions. Thereby, this study aims to investigate the effect of the shape of buried explosive charge on the blast wave propagation and shape of the crater. Two shapes of explosive charge are considered in this study: spherical and cylindrical [with varying diameter-to-length ratios (D/L)]. The results show that while the spherical charge produces an isotropic shock waveform, cylindrical charges with varying D/L ratios generate an oblong-shaped waveform. The shape of the shock wave gets elongated along the axis of the cylinder as the D/L ratio reduces, however, the magnitude of pressure decreases. Though the variation in the shape of explosive charge has a significant effect on the blast wave propagation, it has minimal effect on the shape of the crater.
Influence of Shape of Buried Explosive Charge on Crater Formation and Blast Wave Propagation
https://orcid.org/http://orcid.org/0000-0002-1267-6425
https://orcid.org/http://orcid.org/0000-0001-5166-2547
The effect of explosion on an above-and under-ground structure is rapidly gaining attention from the research community in past years. However, the majority of studies simplify the testing conditions by considering the shape of the explosive as spherical. Certain pertinent studies have proved that the shock waves generated by spherical and non-spherical explosive charges are distinctly different. However, these studies essentially consider free-air blast conditions and not buried explosions. Since the blast mechanisms involved in these two scenarios are vastly different, the variation laws derived from studies on free-air blasts cannot be applied directly to buried explosion conditions. Thereby, this study aims to investigate the effect of the shape of buried explosive charge on the blast wave propagation and shape of the crater. Two shapes of explosive charge are considered in this study: spherical and cylindrical [with varying diameter-to-length ratios (D/L)]. The results show that while the spherical charge produces an isotropic shock waveform, cylindrical charges with varying D/L ratios generate an oblong-shaped waveform. The shape of the shock wave gets elongated along the axis of the cylinder as the D/L ratio reduces, however, the magnitude of pressure decreases. Though the variation in the shape of explosive charge has a significant effect on the blast wave propagation, it has minimal effect on the shape of the crater.
Influence of Shape of Buried Explosive Charge on Crater Formation and Blast Wave Propagation
Lecture Notes in Civil Engineering
Kumar, Ratnesh (editor) / Bakre, Sachin V. (editor) / Goel, Manmohan Dass (editor) / Mandal, Jagriti (author) / Goel, Manmohan Dass (author)
Structural Engineering Convention ; 2023 ; Nagpur, India
2024-11-24
9 pages
Article/Chapter (Book)
Electronic Resource
English
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