Numerical modeling of close-in detonations of high explosives

Shin, Jinwon; Whittaker, Andrew S.; Cormie, David; Wilkinson, Will

doi:10.1016/j.engstruct.2014.09.022

Cited by 64 publications

(29 citation statements)

References 5 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Analysis produced recommendation of new polynomials and design charts for detonation parameters of spherical TNT charges. It was concluded that cell size of R/500 is sufficient for calculating pressures in the scaled distance range of 8 m/kg 1/3 , similar to previous research [10].…”

Section: Introductionsupporting

confidence: 64%

“…Mesh sensitivity analysis was conducted and results clearly indicated that mesh dependency of calculated results is existent. Shin et al [10][11][12] performed numerical 1D, 2D, and 3D simulation of close-in detonation of high explosives in order to validate CFD code for determining incident and reflected overpressure and impulses. It was concluded that mesh refinement studies are needed to establish cell sizes for air blast calculations and that a cell size of R/500 should be sufficient to predict overpressure histories in the near field, where R is the distance from the centre of the charge to the monitoring location.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Analysis of Blast Wave Parameters Depending on Air Mesh Size

Draganić

Varevac

2018

Shock and Vibration

View full text Add to dashboard Cite

Results of numerical simulations of explosion events greatly depend on the mesh size. Since these simulations demand large amounts of processing time, it is necessary to identify an optimal mesh size that will speed up the calculation and give adequate results. To obtain optimal mesh sizes for further large-scale numerical simulations of blast wave interactions with overpasses, mesh size convergence tests were conducted for incident and reflected blast waves for close range bursts (up to 5 m). Ansys Autodyn hydrocode software was used for blast modelling in axisymmetric environment for incident pressures and in a 3D environment for reflected pressures. In the axisymmetric environment only the blast wave propagation through the air was considered, and in 3D environment blast wave interaction and reflection of a rigid surface were considered. Analysis showed that numerical results greatly depend on the mesh size and Richardson extrapolation was used for extrapolating optimal mesh size for considered blast scenarios.

show abstract

Section: Introductionsupporting

confidence: 64%

Section: Introductionmentioning

confidence: 99%

Analysis of Blast Wave Parameters Depending on Air Mesh Size

Draganić

Varevac

2018

Shock and Vibration

View full text Add to dashboard Cite

show abstract

“…The optimization TBX chemical composition to achieve an effective sustained burning (resulted from excess fuel) as well as detonation action (resulted from the high explosive filler) is an essential factor for the real development of TBX [22,23]. Thermochemical calculation was reported to be a promising tool to optimize the chemical formation of TBX [23][24][25]. Numerical simulation enables the prediction of the explosion power of big TBX calibers via experimental data obtained from small scale test [11,26,27].…”

Section: Introductionmentioning

confidence: 98%

Nanoscopic fuel-rich thermobaric formulations: Chemical composition optimization and sustained secondary combustion shock wave modulation

Mohamed

Mostafa

Elbasuney

2016

Journal of Hazardous Materials

View full text Add to dashboard Cite

“…The shock wave produced by an explosion may have a spherical geometry, if the explosion occurred in the air at a considerable distance from the surface of the soil and a hemispherical geometry, if the explosion occurred on the surface of the soil or in its immediate vicinity [2]. In case of shock waves with hemispherical geometry, a wave front reflected by the surface of the ground also appears, besides the incident wave front.…”

Section: Introductionmentioning

confidence: 99%

Computational simulation of shock wave generated by the detonation of explosives for civil use

Tuhut¹,

Ghicioi²

2020

MATEC Web Conf.

View full text Add to dashboard Cite

When conducting a research concerning the propagation of a shock wave generated by the detonation of civil use explosives, the first thing that comes to mind should be if the detonation process takes place in an obstacle-free field, or the area has obstacles such as rocks, metals structures, wood etc, obstacles that can and will influence the final results, the shock wave curve being obturated by it. On one hand, the paper presents the experimental results obtained after the detonation of a freely suspended load, placed at 0.5m above a concrete surface. On the other hand, it compares the values of explosion pressure as shock wave, measured on 4 sensors linearly disposed at the same elevation to the ground, at a distance of 2,3,4 respectively 6 meters from the explosive charge. These values are determined through computerized simulation, using ANSYS AUTODYN software, by virtually reproducing the real scenario. Following the two experiments (real and virtual), one can conclude that computerized simulation proves to be a very useful instrument in an a priori evaluation of hazardous situations/utility of peak values for shock wave, by allowing the user to develop prevention measures/optimization of the analysed processes and also in further investigations

show abstract

Numerical modeling of close-in detonations of high explosives

Cited by 64 publications

References 5 publications

Analysis of Blast Wave Parameters Depending on Air Mesh Size

Analysis of Blast Wave Parameters Depending on Air Mesh Size

Nanoscopic fuel-rich thermobaric formulations: Chemical composition optimization and sustained secondary combustion shock wave modulation

Computational simulation of shock wave generated by the detonation of explosives for civil use

Contact Info

Product

Resources

About