One of the key technologies of stacked projectile weapons is projectile positioning. A new structure based on the self-locking principle is put forward in this paper and verified as feasible by static analysis if the proper material and structural parameters are chosen. In order to check the strength and verify the feasibility of the structure under launch conditions, the multi-body contact finite element model of the structure is established, coupled with dynamic load in the interior ballistic cycle. According to simulations and analysis, the projectile positioning structure is feasible and the strength of the projectile can meet the strength requirement for launch conditions. The influence of the maximum static friction coefficient and structural parameters on positioning performance is obtained on the basis of great computation. Compared with other positioning structures, the new structure has little influence on the ballistic performance and is a good application prospect.
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