蜂窝铝的侵彻实验研究与有限元模拟

目的 研究弹体侵彻蜂窝铝的力学行为。方法 在实验中， 通过轻气炮加速的尼龙弹体冲击蜂窝铝靶体。利用Ansys/LS-DYNA建立了弹体侵彻蜂窝铝的壳单元有限元模型。结果 实验给出了冲击速度为140和167 m/s时弹体的加速度曲线。运用壳单元模型对蜂窝铝的侵彻进行模拟， 得到了弹体的加速度曲线以及蜂窝铝在侵彻过程中的变形图。结论 将模拟结果与实验结果进行了对比， 发现模拟结果与实验结果符合较好， 证明了壳单元有限元模型模拟蜂窝铝侵彻行为的可靠性。

Experimental Study and Finite Element Simulation on Penetration of Aluminum Honeycomb

The aim of this work was to study the mechanical behavior of the projectile penetration into aluminum honeycomb. The aluminum honeycomb target was impacted in the experiment by nylon projectile which was accelerated by light gas gun. The shell finite element model of the projectile penetration into aluminum honeycomb was established by Ansys/LS-DYNA. The acceleration curves of the projectile were given experimentally when the impact velocities were 140 and 167 m/s, respectively. The penetration of aluminum honeycomb was simulated using the shell element model, obtaining the acceleration curves of the projectile and the deformation graphs of aluminum honeycomb during the penetration. The simulation results coincided well with the experimental results, which proved that the shell element model was reliable to simulate the penetration of honeycomb aluminum.