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Mechanical Behavior of the Long Rod Penetrator during Launch

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Abstract:

This study presents a three-dimensional dynamic stress analysis of the sabot/rod system during launch. A study was undertaken to investigate the influence of forward sabot diameter and rod length on the stress of projectile rod traveling in the gun tube. Three types of gun tube profile were simulated. The first profile is straight. The second profile of the tube droop is caused only by gravity and the third is combined droop profile which is caused by gravity with the manufacture status. Numerical simulation results showed that the maximum von Mises stress due to in-bore behavior of the sabot/rod system could be decreased by changing the forward sabot diameter in a tube drooped by gravity loads with the manufacture status. The results also showed that the stress of rod was affected by the factor of at·L/D· ( at ; combined acceleration, L ; length of rod, D ; diameter of rod), and it becomes minimum when the aspect ratio L/D becomes 14 in the model used in the study. in the study

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Info:

Periodical:

Key Engineering Materials (Volumes 261-263)

Pages:

1629-1634

DOI:

https://doi.org/10.4028/www.scientific.net/KEM.261-263.1629

Citation:

Cite this paper

Online since:

April 2004

Authors:

J.B. Kim

Keywords:

Clearance, Gun Tube Profile, Long Rod Penetrator, Sabot, Three Dimensional Dynamic Finite Element Analysis, Von Mises Stress

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© 2004 Trans Tech Publications Ltd. All Rights Reserved

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References

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