Experimental and computational investigation of root-radius melting in C-shaped solid armatures

2004 12th Symposium on Electromagnetic Launch Technology

Volumn , Issue , 2004, Pages 423-428

  Watt, Trevor ^a   Stefani, Francis ^a  

^a UNIVERSITY OF TEXAS AT AUSTIN   (United States)

Author keywords

C shaped armatures; Electromagnetic launch; Finite element analysis; Melt wave erosion; Root radius melting

Indexed keywords

C-SHAPED ARMATURES; ELECTROMAGNETIC LAUNCH; MELT-WAVE EROSION; ROOT-RADIUS MELTING;

CRACK INITIATION; DEFORMATION; FINITE ELEMENT METHOD; HEATING; LAUNCHING; MELTING;

ARMOR;

EID: 28444486641     PISSN: None     EISSN: None     Source Type: Conference Proceeding    
DOI: None     Document Type: Conference Paper

References (29)

1. J.D. Powell and A.E. Zielinski, "Current and heat transport in the solid-armature railgun," IEEE Trans. Magn., vol. 31, pp. 645-650, January 1995.
2. J.D. Powell and A.E. Zielinski, "Observation and simulation of solid-armature railgun performance," IEEE Trans. Magn., vol. 35, pp. 84-89, January 1999.
3. J.D. Powell and A.E. Zielinski, "Ohmic heating in a double-taper sabot-armature," IEEE Trans. Magn., vol. 39, pp. 153-157, January 2003.
4. K.T. Hsieh and B.K. Kim, "International railgun modeling effort," IEEE Trans. Magn., vol. 33, pp. 245-248, January 1997.
5. B.K. Kim and K.T. Hsieh, "Effect of rail/armature geometry on current density distribution and inductance gradient," IEEE Trans. Magn., vol. 35, pp. 413-416, January 1999.
6. L. Rip, S. Satapathy and K.T. Hsieh, "Effect of geometry change on the current density distribution in C-shaped armatures," IEEE Trans. Magn., vol. 39, pp. 72-75, January 2003.
7. R.C. Zowarka, H.D. Yun and A. Alexander, "Railgun solid armature scaling model," IEEE Trans. Magn., vol. 33, pp. 169-174, January 1997.
8. D.A. Hopkins, F. Stefani, K.T. Hsieh and B.K. Kim, "Analysis of startup behavior in a "C-shaped" armature using linked EMAP3D/DYNA3D finite element codes," IEEE Trans. Magn., vol. 35, pp. 59-64, January 1999.
9. J.F. Newill, J.D. Powell and A.E. Zielinski, "Coupled finite-element codes for armature design," IEEE Trans. Magn., vol. 39, pp. 148-152, January 2003.
10. H.P. Liu, Y.L. Ting, R.C. Zowarka, and A. Alexander, " Electromagnetic and structural analyses of an integrated launch package," IEEE Trans. Magn., vol. 35, pp. 74-78, January 1999.
11. H.D. Yun amnd J.H. Price, "Electromagnetic and structural analyses of electric gun and integrated launch package systems," IEEE Trans. Magn., vol. 31, no. 1, pp. 253-258, January 1995.
12. D. C. Haugh and G. M. O. Hainsworth, "Why "C" armatures work (and why they don't!)," IEEE Trans. Magn., vol. 39, no. 1, pp. 52-55, January 2003.
13. A. Zielinski and D. Hildenbrand, "Observation and simulation of armature contact performance in the cannon-caliber electromagnetic gun,"IEEE Trans. Magn., vol. 33, pp. 157-162, January 1997.
14. T. Watt and F. Stefani, "Effect of current and speed on perimeter erosion in recovered armatures," in press.
15. F. Stefani and R. Merrill, "Experiments to measure melt-wave erosion in railgun armatures," IEEE Trans. Magn., vol. 39, no. 1, pp. 188-192, January 2003.
16. F. Stefani and J, Parker, "Experiments to measure wear in aluminum armatures," IEEE Trans. Magn., vol. 35, no. 1, pp. 100-106, January 1999.
17. A. Yeoh, G. Prabhu, and C. Persad, "Liquation cracking and its effects in aluminum alloy armatures," IEEE Trans. Magn., vol. 33, no. 1, pp. 419-425, January 1997.
18. R. Merrill, F. Stefani, and T. Watt, "Numerical modeling of melt-wave erosion in 2D block armatures," in press.
19. Y.S. Touloukian, Editor. Thermophysical properties of high temperature solid materials (TPRC Series), vol. 2, Plenum Press, 1967
20. J. T. Wood, J. D. Embury, and M. F. Ashby, "An approach to materials processing and selection for high-field magnet design," Acta Mater., vol. 45, no. 3, pp. 1099-1104, 1997.
21. D. Basak, W.J. Boettinger, D. Josell, S.R. Coriell, J.L. Mcclure, S. Krishnan, and A. Cezairliyan, "Effect of heating rate and grain size on the melting behavior of the alloy Nb-47 mass% Ti in pulse-heating experiments," Acta Mater., vol. 47, no. 11, pp. 3147-3158, 1999.
22. C. A. Griffis, C. I. Chang and F. R. Stonesifer, "Thermo-mechanical response of tension panels under intense rapid heating," Theoretical and Applied Fracture Mechanics, vol. 3, pp. 41-48, 1985.
23. A, Challita and G.A. Hanlin, "Strength of aluminum under pulsed heating conditions," IEEE Trans. Magn., vol. 31, pp. 684-688, January 1995.
24. T. J. Tucker and R. P. Toth, "EBW1: A computer code for the prediction of the behavior of electrical circuits containing exploding wire elements," Sandia Laboratories Technical Report, SAND-75-0041, April 1975.
25. K. T. Hsieh, "A Lagrangian formulation for mechanically, thermally coupled electromagnetic diffusive processes with moving conductors," IEEE Trans. Magn., vol. 31, no. 1, pp. 604-609, January 1995.
26. V. Thiagarajan, K. Milfeld, and K. T. Hsieh, "Adapting EMAP3D to parallel processing," IEEE Trans. Magn., vol. 37, no. 1, pp. 143-146, January 2001.
27. V. Thiagarajan, K. Milfield, K. T. Hsieh, J. Hodge, "Finite-element analyses of problems in electromagnetic launch using a PC-based Beowulf cluster with high-speed networks," IEEE Trans. Magn., vol. 39, no. 1, pp. 168-172, January 2003.
28. K. T. Hsieh, "Parallelization of EMAP3D based on element-by-element Jacobi preconditioned conjugate gradient method," IEEE Trans. Magn., vol. 39, pp. 139-141, January 2003.
29. Barber et. al., "A survey of armature transition mechanisms," IEEE Trans. Magn., vol. 39, no. 1, pp. 47-51, January 2003.