Study on the effect of stiffness parameter on response in dynamic modelling of the projectile

It is of great significance to understand and master the influence of stiffness parameters on the projectile configuration structure for the design and evaluation of configuration optimisation. In order to obtain the response characteristics of the configuration structure under dynamic load, this paper constructs a theoretical model of the projectile configuration structure reflecting the basic connection characteristics of the charge and the shell based on the concentrated mass method according to the typical characteristics of the actual projectile structure; numerically solves the problem by using the 4th Runge-Kutta method; analyses the response law of the configuration structure under the change of shell stiffness or contact stiffness. The results show that: there is a "small load, big response" rule of change in the projectile structure; when the shell stiffness reaches a certain amplitude, both the response of the charge and the shell tends to flatten, then raise the shell stiffness on the response of the charge structure does not contribute much; contact stiffness is bigger, the response becomes bigger; the increase of the cladding between the charge and the shell, the charge response can be achieved to reduce. If the cladding layer is added between the charge and the shell, the goal of reducing the response of the charge can be achieved.