The soft deformable metallic rotating band of large caliber projectiles prevents the gas leakage between the gun tube wall and the shell body by the band pressure on contact surfaces during the launch cycle of the gun. High rotating band pressures can lead to problems concerning gun tube wear, fatigue, and strength. The effects of changes in construction of rotating band and long range artillery projectile shell body on gun tube loading are studied experimentally. A practical analysis method for tube inner wall pressure computation from outer wall strain measurements is presented. The method is based on assuming stepped pressure load affecting on tube inner wall surface, when the projectile passes the measurement point. Although the analysis method was simplified, it was found to give useful and reliable results for comparative verification of different shell and band structures and their influences on gun tube loading. The structural design of the shell body and the rotating band were shown to be the most important aspects to cause the extreme loadings on the gun tube.
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August 2012
Research Papers
Influence of Rotating Band Construction on Gun Tube Loading—Part II: Measurement and Analysis
Heikki Keinänen
e-mail: heikki.keinanen@vtt.fi
Heikki Keinänen
VTT Technical Research Centre of Finland
, P.O. Box 1000, FI-02044 VTT, Finland
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Juha Toivola
Janne Tervokoski
Heikki Keinänen
VTT Technical Research Centre of Finland
, P.O. Box 1000, FI-02044 VTT, Finland
e-mail: heikki.keinanen@vtt.fi
J. Pressure Vessel Technol. Aug 2012, 134(4): 041007 (8 pages)
Published Online: July 9, 2012
Article history
Received:
December 21, 2011
Revised:
February 17, 2012
Online:
July 9, 2012
Published:
July 9, 2012
Citation
Toivola, J., Moilanen, S., Tervokoski, J., and Keinänen, H. (July 9, 2012). "Influence of Rotating Band Construction on Gun Tube Loading—Part II: Measurement and Analysis." ASME. J. Pressure Vessel Technol. August 2012; 134(4): 041007. https://doi.org/10.1115/1.4006355
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