Abstract
High-temperature friction and high-speed impact are the primary sources of mechanical damage to artillery steel, severely restricting the interior ballistic properties and service life of barrel weapons. A hydrodynamic friction model is first proposed to express the high-temperature friction behavior between the rotating band and the barrel. Additionally, this article deduces a contact force model to describe the high-speed impact behavior between the center band and the barrel. The general expression of mechanical damage can be obtained by the hydrodynamic friction and contact force models. Meanwhile, this article calculates the frictional coefficient and contact force distribution during the artillery launching combined ABAQUS with polynomial chaos expansion. The experimental verification of the hydrodynamic friction and contact force models is organized, and the detailed assessments show that the frictional coefficient and contact force responses have good agreement with experimental data. Finally, this article gives the mechanical damage evolution based on the general mechanical damage model. The mechanical damage of the barrel chamber is mainly located at the muzzle and 1/6 barrel length position from the beginning of rifling.
Published Version
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