The design of a projectile-based equipment against high overload is very difficult in the context of the new-type information based ammunition design, and is one of the primary bottlenecks in the information based development of shells. At present, methods are usually adopted to simplify the system of the launching load and the load-relieving structure into a linear system to deal with the problem of Projectile-loaded Equipments against high overload; the results are not satisfactory as compared with the test results. According to the actual launching load and the nonlinear characteristics of load-relieving structure materials, based on a one-dimensional dynamical model in the strong shock condition, the load curve and the force-displacement curve of the load-relieving structure using material's mechanical experiment are obtained by curve fitting from data obtained by numerical simulations. The computational models of relative displacement and relative acceleration of the projectile-based equipment can be calculated using a precise integration method. With a certain special type shell as an example, the dynamic response of the projectile-based equipment is calculated, experiment results have verified the calculation results, and therefore, the research methods can provide a theoretical reference for the design of projectile-based equipment against high overload.
