Solid Punching Increase In The Intensity Of Process Shells

In this paper, the Finite Element Method (FEM) is applied to analyze the dynamic stress and strain distribution of a certain solid ramjet assisted projectile. Every component of projectile is analyzed. These researches are using FEM software ABAQUS and make the high overload problems as background, which is common when the solid ramjet assisted projectile is launching. The structure, material and work property of solid ramjet assisted projectile are analyzed. Built up the calculation model of solid ramjet assisted projectile, and analyzed the influence of solid ramjet assisted projectile under loads in detail.Completed the simplification of load conditions and geometry structures. Established the 3D FEM models of ramjet assisted projectile and its components on the basis of real status. Took the material nonlinear, geometry nonlinear, and state nonlinear of models into account in modeling, and deal with the simplification of the model and the contact of the component nicely. The pressure is applied to the bottom of the solid ramjet assisted projectile, and the stress and strain distribution of each component can be got by the analysis of Finite Element Method, then judging whether the structure is reasonable. Established the models of components which stress are large, then analyzed them .At last, researched the stress and strain of column under the high axial load. On the foundation, analyzed the stress and strain of different structure column, and got some value results.This paper provides a new method to analyze the intensity of launch. The result provides the gist for the design of ramjet assisted projectile in the intensity. It also makes a good foundation for the following research.