ANALYTICAL AND NUMERICAL ANALYSIS OF AXIAL STRESSES IN A HIGH EXPLOSIVE ROCKET ASSISTED PROJECTILE BODY DURING ITS LAUNCH

Abstract

The paper presents analytical and numerical analysis of axial stresses in a novel designed high explosive rocket assisted projectile body during its launch. Classical theoretical approach and finite element method (FEM) were used for this purpose. The novel projectile design is based on the M107 and M549 projectiles, enhancing range and withstanding the barrel pressure from the propellant charges used. The goal of the research is to present that the obtained stresses results, in characteristic cross-sections, founded by the classical theoretical and numerical methods, give good agreement. The obtained results are helpful in a preliminary stage for the design of extended range projectiles. The analysis of axial stresses enables the selection of the rocket motor case material and its mechanical and thermal processing