TY - GEN
T1 - Experimental and numerical investigation of armature/stator contact in magnetic flux compression generators
AU - Rasty, Jahan
AU - Le, Xiaobin
AU - Neuber, Andreas
AU - Dickens, Jim
AU - Kristiansen, Magne
N1 - Publisher Copyright:
© 2002 IEEE.
PY - 2015
Y1 - 2015
N2 - The efficiency of a Magnetic Flux Compression Generators (MFCG) is highly dependent on the expanding characteristics of the exploding armature and the nature of contact between the armature and the surrounding stator coil. A hydrodynamic Finite Element (FE) model was developed to simulate the expansion characteristics of the armature and its ensuing impact with the stator. The effectiveness of the FE model to simulate the explosive behavior of the armature was qualified by comparing the numerical results with experimentally measured parameters. Specifically, the radial displacement of the armature as well as the axial velocity of the armature/stator contact point were measured experimentally and compared with numerical results showing excellent agreement between the two. The results indicated that the radial and axial velocity with which the armature impacted the stator did not change through the length of the armature. However, the results showed that the velocity with which the contact point between the armature and the stator traveled along the length of the armature decreased as the explosion process went on. As expected, the axial propagation velocity of the contact point was found to be at its highest value (2.25 X detonation velocity) at the region close to the detonation end while approaching the detonation velocity at points away from the detonation end.
AB - The efficiency of a Magnetic Flux Compression Generators (MFCG) is highly dependent on the expanding characteristics of the exploding armature and the nature of contact between the armature and the surrounding stator coil. A hydrodynamic Finite Element (FE) model was developed to simulate the expansion characteristics of the armature and its ensuing impact with the stator. The effectiveness of the FE model to simulate the explosive behavior of the armature was qualified by comparing the numerical results with experimentally measured parameters. Specifically, the radial displacement of the armature as well as the axial velocity of the armature/stator contact point were measured experimentally and compared with numerical results showing excellent agreement between the two. The results indicated that the radial and axial velocity with which the armature impacted the stator did not change through the length of the armature. However, the results showed that the velocity with which the contact point between the armature and the stator traveled along the length of the armature decreased as the explosion process went on. As expected, the axial propagation velocity of the contact point was found to be at its highest value (2.25 X detonation velocity) at the region close to the detonation end while approaching the detonation velocity at points away from the detonation end.
UR - http://www.scopus.com/inward/record.url?scp=84952028913&partnerID=8YFLogxK
U2 - 10.1109/PPPS.2001.01002005
DO - 10.1109/PPPS.2001.01002005
M3 - Conference contribution
AN - SCOPUS:84952028913
T3 - PPPS 2001 - Pulsed Power Plasma Science 2001
SP - 106
EP - 109
BT - PPPS 2001 - Pulsed Power Plasma Science 2001
A2 - Reinovsky, Robert
A2 - Newton, Mark
PB - Institute of Electrical and Electronics Engineers Inc.
T2 - 28th IEEE International Conference on Plasma Science and 13th IEEE International Pulsed Power Conference, PPPS 2001
Y2 - 17 June 2001 through 22 June 2001
ER -