考虑头形磨损变化的动能弹侵彻深度研究

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Studying on the penetration depth of penetrator with including the effect of mass abrasion

Engineering Institute of Engineering Corps, PLA University of Science and Technology, Nanjing 210007, ChinaInstitute of Structural Mechanics, China Academy of Engineering Physics, P.O.Box 919-401, Mianyang 621900, ChinaCollege of Science, PLA University of Science and Technology, 210007 Nanjing, ChinaEngineering Institute of Engineering Corps, PLA University of Science and Technology, Nanjing 210007, China

摘要: 质量损失主要发生在弹体头部，讨论残余弹头形状因子的主要影响因素，给出了更为一般化的残余弹头形状因子与初始撞击速度之间的关系. 假设在整个侵彻过程中弹体头部形状因子及质量保持瞬时速度平方的线性关系，得到了能够考虑弹体头部质量磨损的侵彻深度计算方法. 弹体质量损失将导致其侵彻深度存在上限，该修正模型可以找出达到侵彻深度上限的弹体初始撞击速度.
- 爆炸力学 /
- 极限深度 /
- 侵彻 /
- 质量磨损 /
- 混凝土靶
Abstract: Mass abrasion is observed on the nose of a projectilewhen it strikes concrete target at high velocity, which significantly affectthe penetration performance. To evaluate the influence of the mass abrasionon the depth of penetration (DOP), an empirical relationship between thenose factor of the residual projectile after abrasion and the initial impactvelocity is constructed according to the published experimental data. Basedon the dynamic cavity expansion theory, considering the varying nose shapeand the instant mass of a projectile, a modified model is proposed tocalculate the DOP of kinetic energy penetrator. The modified modeldemonstrates that an upper limit of DOP exists due to the mass abrasion ofprojectile, which also had been confirmed by different experimental data.
- Mechanics of explosion /
- DOP /
- Penetration /
- Mass abrasion /
- Concrete targets