壳体切缝的结构参数对PELE横向效应的影响

为了研究壳体切缝结构参数(切缝的周向个数N、径向深度H和轴向长度L)对横向效应增强型侵彻体(PELE)侵彻钢筋混凝土靶开孔尺寸的影响,利用数值仿真方法对具有不同壳体切缝结构参数的PELE侵彻钢筋混凝土靶进行正交优化分析,通过定义横向效应贡献值对弹丸轴向动能转化为钢筋混凝土靶因壳体膨胀破坏损失的能量进行研究。结果表明,壳体切缝参数为N=8、H=5.5 mm、L=150 mm时,钢筋混凝土靶破坏的开孔尺寸最大为409 mm,横向效应贡献值最大,并且PELE的横向效应效果最佳。同时,壳体切缝结构参数对PELE横向效应的影响程度:L最大,N次之,H最小。

Effect of Structure Parameters of the Jacket Breakage on Lateral Effect of PELE

To study the effect of structure parameters (the peripheral number N, radial depth H and axial length L of breakage) of the jacket breakage on the penetrated hole size for penetrating reinforced concrete target of penetrator with enhanced lateral effect (PELE), the orthogonal optimization analysis of PELE which has different structure parameters of the jacket breakage penetrating reinforced concrete targets was performed by means of numerical simulation method and the study of translating the axial kinetic energy of projectile as the lost energy which jacket expanding brokes reinforced concrete targets was carried out by defining lateral effect contribution value. Results show that the largest size of the reinforced concrete penetrated hole is 409 mm, the lateral effect contribution value is the largest,and the lateral effect of PELE is the best,when the structure parameters of the jacket breakage of N=8, H=5.5 mm, L=150 mm are taken. At the same time, the influencing degreel of structure parameters of the jacket breakage on the lateral effect of PELE is that L is maximum, N is second, H is minimum.