International Journal of Aeronautical and Space Sciences

The Korean Society for Aeronautical and Space Sciences (한국항공우주학회)
권호 표지
DOI QR코드

DOI QR Code

A Parametric Study of Ridge-cut Explosive Bolts using Hydrocodes

  • Lee, Juho (Department of Aerospace Engineering, KAIST, Korea Advanced Institute of Science and Technology) ;
  • Han, Jae-Hung (Department of Aerospace Engineering, KAIST, Korea Advanced Institute of Science and Technology) ;
  • Lee, YeungJo (The 4th R&D Institute, Agency for Defense Development) ;
  • Lee, Hyoungjin (PGM R&D Lab., LIG NEX1 Co. Ltd.)
  • Received : 2015.01.21
  • Accepted : 2015.03.05
  • Published : 2015.03.30
Download PDF
⟨ Previous Next ⟩

Abstract

Explosive bolts are one of pyrotechnic release devices, which are highly reliable and efficient for a built-in release. Among them, ridge-cut explosive bolts which utilize shock wave generated by detonation to separate bolt body produce minimal fragments, little swelling and clean breaks. In this study, separation phenomena of ridge-cut explosive bolts or ridge-cut mechanism are computationally analyzed using Hydrocodes. To analyze separation mechanism of ridge-cut explosive bolts, fluid-structure interactions with complex material modeling are essential. For modeling of high explosives (RDX and PETN), Euler elements with Jones-Wilkins-Lee E.O.S. are utilized. For Lagrange elements of bolt body structures, shock E.O.S., Johnson-Cook strength model, and principal stress failure criteria are used. From the computational analysis of the author's explosive bolt model, computational analysis framework is verified and perfected with tuned failure criteria. Practical design improvements are also suggested based on a parametric study. Some design parameters, such as explosive weights, ridge angle, and ridge position, are chosen that might affect the separation reliability; and analysis is carried out for several designs. The results of this study provide useful information to avoid unnecessary separation experiments related with design parameters.

Keywords

References

  1. Brauer, K. O., Handbook of pyrotechnics, Chemical Publishing Co., New York, 1974.
  2. Bement, L. J. and Schimmel, M. L., A Manual for Pyrotechnic Design, Development and Qualification, NASA, NASA Technical Memorandum 110172, 1995.
  3. Kafadar, C. B., "The Mathematical Foundation for the "Ridge-Cut" Technique Used in Explosive Bolts", Annual Meeting of the Pyrotechnics and Explosives Applications Section on the American Defense Preparedness Association, 1983.
  4. Balden, V. H. and Nurick, G. N., "Numerical simulation of the post-failure motion of steel plates subjected to blast loading", International Journal of Impact Engineering, Vol. 32, 2005, pp. 14-34. https://doi.org/10.1016/j.ijimpeng.2005.07.013
  5. Bonorchis, D. and Nurick, G. N., "The influence of boundary conditions on the loading of rectangular plates subjected to localised blast loading -Importance in numerical simulations", International Journal of Impact Engineering, Vol. 36, No. 1, 2009, pp. 40-52. https://doi.org/10.1016/j.ijimpeng.2008.03.003
  6. Bonorchis, D. and Nurick, G. N., "The analysis and simulation of welded stiffener plates subjected to localised blast loading", International Journal of Impact Engineering, Vol. 37, No. 3, 2010, pp. 260-273. https://doi.org/10.1016/j.ijimpeng.2009.08.004
  7. Katayama, M. and Kibe, S., "Numerical study of the conical shaped charge for space debris impact", International Journal of Impact Engineering, Vol. 26, 2001, pp. 357-368. https://doi.org/10.1016/S0734-743X(01)00106-3
  8. Katayama, M., Itoh, M., Tamura, S., Beppu, M. and Ohno, T., "Numerical analysis method for the RC and geological structures subjected to extreme loading by energetic materials", International Journal of Impact Engineering, Vol. 34, No. 9, 2007, pp. 1546-1561. https://doi.org/10.1016/j.ijimpeng.2006.10.013
  9. Trelat, S., Sochet, I., Autrusson, B., Cheval, K. and Loiseau, O., "Impact of a shock wave on a structure on explosion at altitude", Journal of Loss Prevention in the Process Industries, Vol. 20, 2007, pp. 509-516. https://doi.org/10.1016/j.jlp.2007.05.004
  10. Trelat, S., Sochet, I., Autrusson, B., Loiseau, O. and Cheval, K., "Strong explosion near a parallelepipedic structure", Shock Waves, Vol. 16, 2007, pp. 349-357. https://doi.org/10.1007/s00193-006-0069-3
  11. Lee, J., Han, J.-H., Lee, Y. and Lee, H., "Separation characteristics study of ridge-cut explosive bolts", Aerospace Science and Technology, Vol. 39, 2014, pp. 153-168. https://doi.org/10.1016/j.ast.2014.08.016
  12. Lee, Y. J., The Study of Development of Ridge-Cut Explosive Bolt (I), Agency for Defense Development, 2000.
  13. Lee, Y. J., The Study of Devlopment of Ridge-Cut Explosive Bolt (II), Agency for Defense Development, 2001.
  14. Lee, E. L., Hornig, H. C. and Kury, J. W., Adiabatic Expansion of High Explosive Detonation Products, Lawrence Radiation Laboratory, UCRL-50422, 1968.
  15. Zukas, J. A. and Walters, W. P., Explosive effects and applications, Springer, New York, 1998.
  16. Meyers, M. A., Dynamic behavior of materials, Wiley, New York, 1994.
  17. Cooper, P. W., Explosives engineering, VCH, New York, N.Y., 1996.
  18. Zukas, J. A., Introduction to hydrocodes, Elsevier, Amsterdam, 2004.
  19. AK_Steel_Corporation, Product Data Bulletin : 17-4PH Stainless Steel, AK Steel Corporation, http://www.aksteel.com/pdf/markets_products/stainless/precipitation/17-4_PH_Stainless_Steel_PDB_201404.pdf, 2014.
  20. Weirick, L. J., Plane Shock Generator Explosive Lens: Shock Characterization of 4340 and PH13-8Mo Steels, C360 Brass and PZT 65/35 Ferro-Electric Ceramic, Sandia National Laboratories, SAND93-3919, 1994.
  21. 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, 1983.

Cited by

  1. Numerical Analysis and Simplified Mathematical Modeling of Separation Mechanism for the Ball-type Separation Bolt vol.20, pp.3, 2016, https://doi.org/10.6108/KSPE.2016.20.3.063
  2. Fatigue Assessment of Explosive Bolts Considering Vibration of Fixtures vol.7, pp.4, 2017, https://doi.org/10.3390/app7040440
  3. Pyroshock Prediction of Ridge-Cut Explosive Bolts Using Hydrocodes vol.2016, 2016, https://doi.org/10.1155/2016/1218767
  4. Identification of Pyrotechnic Shock Sources for Shear Type Explosive Bolt vol.2017, 2017, https://doi.org/10.1155/2017/3846236
  5. Analysis of air blast effect for explosives in a large scale detonation vol.34, pp.12, 2017, https://doi.org/10.1007/s11814-017-0227-6
  6. Experimental and numerical investigation on the shock characteristics of U-notched ZL205A specimens under dynamic mixed-mode loading vol.15, pp.11, 2018, https://doi.org/10.1590/1679-78254862
  7. Mathematical Model for the Separation Behavior of Low-Shock Separation Bolts vol.55, pp.5, 2018, https://doi.org/10.2514/1.A34090