Influence of Charge Shape and Orientation on the Response of Steel-Concrete Composite Panels


  • Abraham Christian National University of Singapore
  • Lado Riannevo Chandra National University of Singapore
  • Satadru Das Adhikary National University of Singapore
  • Khim Chye Gary Ong National University of Singapore


blast, charge shape, MM-ALE, steel-concrete composite


Blast design codes usually generalize the shape of the charge as spherical or hemispherical. However, it was found that the blast overpressure of cylindrical charges differ greatly when compared with relevant analytical results generated with the charges assumed to be spherical. The objective is to use fully coupled 3D multi-material arbitrary Lagrangian Eulerian (MMALE) modelling technique in LS Dyna software to simulate the cylindrical charge blast loading. Comparison of spherical and cylindrical charge blast simulation was carried out to show the influence on peak overpressure and total impulse. Two steel-concrete composite specimens were subjected to blast testing under cylinder charges for benchmarking against numerical results. It was found that top detonated, vertical cylinder charge could give much higher blast loading compared to horizontal cylinder charge. The MMALE simulation could generate the pressure loading of various charge shape and orientation to be used for predicting the response of the composite panel.


B. Simoens and M. H. Lefebvre, "Influence of the shape of an explosive charge: quantification of the modification of the pressure field," Central European Journal of Energetic Materials, vol. 12, pp. 195-213, 2015.

P. Sherkar, J. Shin, A. Whittaker, and A. Aref, "Influence of charge shape and point of detonation on blast-resistant design," Journal of Structural Engineering, vol. 142, p. 04015109, 2016.

M. Ismail and S. Murray, "Study of the blast waves from the explosion of nonspherical charges," Propellants, Explosives, and Pyrotechnics, vol. 18, pp. 132-138, 1993.

B. Simoens, M. H. Lefebvre, and F. Minami, "Influence of different parameters on the TNT-equivalent of an explosion," Central European Journal of Energetic Materials, vol. 8, pp. 53-67, 2011.

C. Wu, G. Fattori, A. Whittaker, and D. J. Oehlers, "Investigation of air-blast effects from spherical-and cylindrical-shaped charges," International Journal of Protective Structures, vol. 1, pp. 345-362, 2010.

UFC3-340-02, "Structures to resist the effects of accidental explosions," Department of the Army and Defense Special Weapons Agency, Washington, DC, USA, 2008.

E. D. Esparza, "Spherical equivalency of cylindrical charges in free-air," presented at the 25th Department of Defense Explosives Safety Seminar, Texas, 1992.

V. Adamik, J. Vagenknetch, P. Vavra, and W. A. Trzcinski, "Effect of TNT charges orientation on generated air blast waves," presented at the ANSYS User's Meeting, Czech Republic, 2004.

E. Lee, M. Finger, and W. Collins, "JWL equation of state coefficients for high explosives," United States, 1973.

A. Christian and K. C. G. Ong, "Performance of fiber reinforced high-strength concrete with steel sandwich composite system as blast mitigation panel," Procedia Engineering, vol. 95, pp. 150-157, 2014.

B. Riisgaard, T. Ngo, P. Mendis, C. T. Georgakis, and H. Stang, "Dynamic increase factors for high-performance concrete in compression using split Hopkinson pressure bar," Fracture Mechanics of Concrete and Concrete Structures, vol. 1-3, pp. 1467-1471, 2007.

B. Rabbat and H. Russell, "Friction coefficient of steel on concrete or grout," Journal of Structural Engineering, vol. 111, pp. 505-515, 1985.

M. J. Islam, Z. S. Liu, and S. Swaddiwudhipong, "Numerical study on concrete penetration/perforation under high velocity impact by ogive-nose steel projectile," Computers and Concrete, vol. 8, pp. 111-123, 2011.

A. Christian, "Fibre reinforced high strength concrete with cellular steel sandwich composite panel for blast and impact mitigation," Ph.D, Civil & Environmental Eng., National University of Singapore, Singapore, 2015.




How to Cite

A. Christian, L. R. Chandra, S. D. Adhikary, and K. C. G. Ong, “Influence of Charge Shape and Orientation on the Response of Steel-Concrete Composite Panels”, Int. j. eng. technol. innov., vol. 6, no. 4, pp. 284–293, Sep. 2016.