摘要
着重讨论了高速(800m/s^1800m/s)柱形(或立方体形)钢破片(质量3.3g^60g)对不同厚度的某型船体钢靶(4mm^10mm)的穿透特性和剩余速度问题;首先给出穿透过程的分析模型,认为钢破片对船体钢靶的穿透能主要包括:弹、靶挤压塑性变形能和环向剪切塑性变形能;以能量分析和德.马尔模型为基础,给出了相应的半经验公式;在32组有效穿透实验测试数据的基础上,对相关系数进行数值拟合及动态修正;通过计算结果和试验测试结果的对比,得到的半经验公式能较好描述高速破片穿透船体钢板后的剩余速度。
The ballistic characteristic and the residual velocity of the column （or cubic） fragments （weight： 3.3g～60g） are discussed in this paper after high-speed （velocity： 800m/s～1800m/s） perforation of the warship structure＇s steel target （thickness： 4mm～10mm）. An analysis model is proposed, in which the energy loss of fragments in the penetrating course is transmitted into the strain energies of steel hull due to the compression deformation and annular shear plastic deformation. Based on the conservation of energy and De.Mane model, a semi-empirical formula based on experiments is given. The coefficients in the equation are obtained by numerical data fitting of 32 group test results. The semi-empirical formula is proved to be efficient and reliable by comparision between experimental and calculation results.
出处
《工程力学》
EI
CSCD
北大核心
2005年第4期235-240,共6页
Engineering Mechanics
基金
国防科技预研基金项目
关键词
爆炸力学
舰船防护
穿甲实验
冲击
高速破片
半经验公式
mechanics of explosion
warship＇s safety
ballistic test
impact
high-velocity fragment
semi-empirical formula
