Advanced SearchSearch Tips
Study of Separation Mechanism According to the Constraint Condition of Explosive Bolts
facebook(new window)  Pirnt(new window) E-mail(new window) Excel Download
 Title & Authors
Study of Separation Mechanism According to the Constraint Condition of Explosive Bolts
Jeong, Donghee; Lee, Youngwoo;
  PDF(new window)
Explosive bolt is one of separation device that uses high explosive charge, and is separated by pressure formed by an explosion and the resulting shock waves. Explosive bolt having such a mechanism would have to be designed to minimize shock and debris formation generated during separation. In this study, separation tests were carried out with distance as variable for restraining the explosive bolt (Air Gap). Bolt release and its separating shape with variation of air gap is observed, and we used accelerometer to measure the shock wave transmitted through a bound object. In addition, separation behavior of explosive bolt is analyzed using ANSYS AUOTODYN program. By comparing the results of previously performed experiments and analysis, we could confirm the effects of air gap to the release behavior of explosive bolt, and decide optimum constraining environment for specific separation bolts.
Explosive Bolt;Pyro Device;AUTODYN Program;
 Cited by
Karl O.B., Handbook of Pyrotechnics, Chemical Publishing Co., Inc., New York, N.Y., U.S.A., pp. 119-128. 1974.

Lee, Y.J., "The Interpretation of Separation Mechanism of Ridge-Cut Exploisve Bolt Using Simulation Programs," Journal of the Korean Society of Propulsion Engineers, Vol. 8, No. 2, pp. 102-114. 2001.

Marc A.M., Dynamic Behavior of Materials, John Wiley & Sons Inc., New York, C.O., U.S.A., 1994.

Johnson, G.R. and Cook, W.H., "A constitutive model and data for metals subjected to large strains, high strain rates and high temperatures," Proceedings of the Seventh International Symposium on Ballistics, The Hague, Netherlands, pp. 541-547, 1983.

Lee, E.L., Hornig, H.C. and Kury, J.W., "Adiabatic Expansion of High Explosive Detonation Products," Rept. UCRL-50422, Lawrence Radiation Laboratory, Livermore, 1968.