Analysis of the pressure distribution in a gun chamber and the pressure gauge layout

DOI:	10.11809/bqzbgcxb2023.03.011
Keywords:	bore pressure; LS DYNA; numerical analysis; pressure cloud image; pressure gauge
Abstract:	At present, there is a certain error in approximately replacing the pressure change rules of a bore with the pressure change at a certain point in a chamber.Therefore, this paper proposes to use LS DYNA software to conduct a numerical analysis on the bore pressure of an 85mm caliber gun and observes the gas pressure cloud image of the powder burning in a chamber to determine the position of the pressure gauge. The research shows that the pressure changes at different positions in the bore are quite different. The characteristic points are selected according to the pressure cloud image to represent the pressure changes in the same area. With a consideration of economic cost, four optimal test points are found out, and the fitting formula is used to predict the pressure changes of the other characteristic points.
Published:	2023-03-28
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