In the process of projectile penetrating hard targets, fuze reliability may be reduced for the stress abrupt change. To solve the problem, based on the stress wave propagation theory, fuze force model was established, and the coupling action between impact load and fuze media was researched. Moreover, the variation of load impact acting on fuze was explored and the mathematical expression of maximum value for stress abrupt change was deduced. On this basis, the impact of gasket thickness and gasket structure on shock resistance performance of fuze was researched by the method of theoretical analysis combined with software simulation. An optimum design scheme for fuze protection was proposed, which is achieved by adjusting gasket thickness and structuring gasket. Whereafter, the optimization scheme was verified by the recovery experiment based on mortar platform. The simulation and experiment results show that the optimization scheme is reasonable and feasible, which can effectively attenuate impact load and improve the reliability of fuze.
Key words
penetration /
impact /
fuze protection /
isolation gasket
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