Study on Equivalent Constitutive Model and Optimization Design for Adapter of Submarine-Lunched Missile

Abstract

V-shape adapter is one of the most used hollow adapter in submarine-lunched missile, studying on influence of mechanical property of adapter on submarine-launched performance has an important significance. Firstly, mechanical analysis on V-shape adapter is done and the equivalent out-of-plane mechanical property of adapter is obtained. Secondly, the equivalent constitutive model is built and the user subroutine VUMAT is developed based on ABAQUS/Explicit, while the stability and reliability of the calculation results are verified. According to the requirements of adapter performance from submarine-lunched missile, optimization design for adapter is carried out. The results show that the equivalent constitutive model can simplify the simulation of adapter and shorten the engineering time in research, and the optimized adapter can have a good effect on vibration reduction and supporting based on some relevant conditions.

Research on Simulation Method of Missile Adapter’s Separation Based on Combined Calculation

“…After sliding out of the launch canister, the adapters are separated from the projectile under the action of the elastic force, the aerodynamic force, and their own gravity of the springs and they fly along the preset paths in the air, while the missile flies along the set trajectory under the action of the propulsive force of the engine. According to the adapter separation characteristics, the factors which influence the separation between the adapters and the projectile are the following [22][23][24][25]: (1) Aerodynamic shape and mass: when the outlet velocity is certain, if the aerodynamic lift increases, the resistance coefficient decreases, and the adapters can obtain longer separation distance. If the adapter mass is small, the flying motion of the adapter after separation is influenced easily by the air current.…”