Analysis of internal ballistics during rotating band engraving process

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Journal of Vibration and Shock ›› 2016, Vol. 35 ›› Issue (23) : 74-79.

LI Miao, QIAN Lin-fang,CHEN Long-miao

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Abstract

Interior ballistic equation during rotating band engraving process was elaborated by introducing the strain energy and friction dissipation into the energy balance equation and calculating the propellant gas pressure distribution in the tapered chamber, the results of the equation were taken as the boundary conditions of the coupled thermo-mechanical analysis of engraving process. The friction between the rotating band and the barrel was modeled using modified Coulomb model which the temperature at the interface was taken into consideration. The velocity of the projectile and pressure in bore was get and changes of resistance was analyzed, it may help to make better understanding of the artillery design and firing accuracy.

Key words

rotating band / engraving process / initial interior ballistic / high speed sliding

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LI Miao, QIAN Lin-fang,CHEN Long-miao . Analysis of internal ballistics during rotating band engraving process[J]. Journal of Vibration and Shock, 2016, 35(23): 74-79

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