Penetration Depth Information Crawl Technology

The phenomenon about projectile impact is the extremely complex solid dynamicsquestion.After projectile penetration target body, invasion depth information was acquired toevaluate projectile penetration effect and detonate implement the important basis of depth.Aiming at penetration depth information crawl technology, three predictive methods wereused to analyze the calculation method of invasion depth information: the theoretical analysis,numerical simulation and the experiments. In addition, the reliability of the ammunitionstorage test system and buffer protection was introduced emphatically in the actual process ofgathering information.(1)In this paper, three kinds of most basic, the most commonly used methods (empiricalmethod, theoretical analysis and numerical simulation method) against invasion depthinformation research were discussed in detail. Penetration depth of the projectile penetratingconcrete target of the body was simulated and analyzed by LS-DYNA software. The formulaof penetration depth put forward by Empirical method was verified and their scope was alsodetermined. Then the calculation model and approximation algorithm of penetration depth ofmulti-layer composite medium were introduced, and the approximate algorithm is proved tobe correct through the experimental data.(2) Invasion depth information in the process of Projectile penetrating target body isachieved through the ammunition storage test system. In actual measurement, the ammunitionstorage test system has high demand on the overload resistance ability. Overload resistanceand their failure of resistance sensor, the storage circuit and battery were mainly analyzed.Besides, their failure mechanism was discussed and the protective measure in the actual testswas puts forward. Through the analysis of the cushioning mechanism of the foam aluminumand circular thin-walled aluminum shell, the energy absorption characteristics of aluminumfoam filled circular shell is studied. And anti-high overload buffering characteristics ofaluminum foam filled circular shell was evaluated from two aspects of quasi static compression and high impact to obtain the ideal buffer effect.