Research On The Impact Initiation Technology Of Ammunition In Ship Ammunition Store Under The Compound Effect Of Fragment And Shock Wave

The design of ammunition store is an important part of the design of ship weapon system.In the overall design of a ship,the combat mission of the ship should be fully considered.That is to say,different ammunition is configured in different positions,and the fighting mode is different.Therefore,the research on damage rule of ship ammunition is an important content of the research on the safety of ship ammunition store.Firstly,this paper analyzes the structure of the ammunition store of the U.S.“Fletcher” destroyer,the type of ship ammunition store and the structure of the “Exocet” anti-ship missile payload,and determines the parameters of the destroying elements and target.Then,simulated the effects of different destroying elements on the ammunition numerically.Finally,the influence of different destroying elements parameters and different environments were compared and analyzed.The research results show that:(1)The effect of fragment destroying element on ammunition is mainly local crevasse penetration,the process of ammunition penetration in the ammunition store is not different from that in the free field.The shape of the fragment has a certain influence on detonating ammunition,and the smaller of contact area between the fragment and the ammunition,the less likely the ammunition is to be detonated;(2)The effect of shock wave destroying element on ammunition is mainly the deformation of the whole,and the expansion deformation of ammunition store is caused by the action of shock wave.The relative position of ammunition has certain influence on the damage of ammunition.The relative position is the relative distance of the ammunition to the hull and the detonating point of the explosive.The farther of the detonation point is from the ammunition,or the closer of the ammunition is to the hull,the ammunition is difficult to be detonated.(3)The compound effect of fragment and shock wave on ammunition damage is related to the sequence of action of fragment and shock wave.In general,the final result of damage is similar to that of the first destroying element when it impacts the ammunition alone.