摘要
对非对称外壳形成倾斜尾翼EFP进行了数值模拟。通过利用LS-DYNA软件和流固耦合方法,对所设计的采用非对称变壁厚外壳的药型罩的成型过程进行数值计算,并与对称外壳进行了比较,分析了直尾翼和倾斜尾翼形成过程的异同。数值模拟结果表明,非对称外壳可以形成倾斜尾翼EFP,倾斜尾翼可以为弹丸提供导转力矩,使EFP在飞行中旋转,从而改善飞行稳定性并提高着靶精度。
Explosively formed projectile with canted fins by asymmetrical casing is simulated numerically. The formation process of liner with changing thickness casing is calculated by FSI method in LS-DYNA. Similarities and differences between straight fins and canted fins are analyzed based on symmetric casing. The results show that asymmetric casing can produce EFP with canted tail. The canted tail can induce angular moment during EFP flying and make EFP spin. Spin can improve aero-ballistic characteristics and impact precision.
出处
《火工品》
CAS
CSCD
北大核心
2010年第4期17-20,共4页
Initiators & Pyrotechnics
