A study on firing dynamics of a glass/carbon hybrid filament winding composite launch canister

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Journal of Vibration and Shock ›› 2019, Vol. 38 ›› Issue (24) : 74-80.

SUN Tongsheng1,WANG Qi2,YU Cungui1

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Abstract

In order to simulate the motion process of projectile in bore accuracy, the two-dimensional transient distribution characteristics of the propellant gas pressure in a glass/carbon hybrid filament winding composite launch canister was considered.Based on the contact collision theory and considering the strong dynamic impact of propellant gas, a numerical analysis model for the nonlinear coupling problems between the projectile and the launch canister was built.A user-defined subroutine was used to reconstruct the correlation kinetic process between the temporal and spatial variation of propellant gas pressure and the projectile motion.Numerical analysis results were compared with test data.The results show that the established numerical analysis model can reproduce the physical field changes in the actual launching process and the dynamics stress response of launch canister can be simulated more actually, providing a theoretical support for the design, optimization ,and launch safety evaluation of the fiber composite launch canister.

Key words

glass/carbon hybrid / launch canister / user-defined subroutine / projectile-barrel coupling / finite element analysis

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SUN Tongsheng1,WANG Qi2,YU Cungui1. A study on firing dynamics of a glass/carbon hybrid filament winding composite launch canister[J]. Journal of Vibration and Shock, 2019, 38(24): 74-80

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