圆柱形弹体Taylor撞击方法研究

Research on an analytic method for Taylor impact of a cylinder projectile

1.
Department of Resource Exploration and Management Engineering, Anhui University of Science and Technology, Huainan 232001, Anhui, China;
2.
Department of Applied Mechanics and Engineering, Southwest Jiaotong University, Chengdu 610031, Sichuan, China

摘要: 研究了圆柱形弹体垂直撞击刚性靶体的Taylor撞击问题，提出了弹体撞击过程中未发生变形部分的速度变化规律，即二次非线性变减速运动，并通过弹体的运动方程对Taylor撞击进行了理论分析；同时利用再生核质点法(Reproducing kernel particle method,RKPM)对Taylor撞击过程进行了数值分析。利用该理论对五种具体材料进行分析，结果表明,解析结果与试验结果及数值分析结果吻合较好。
- 爆炸力学 /
- 动态屈服强度 /
- RKPM /
- Taylor撞击 /
- 运动方程
Abstract: A new method was developed to analyze the Taylor impact problem of the rigid target vertically impacted by a cylinder projectile. The quadric nonlinear velocity variation was proposed in this method for the part of a projectile that has not any deformation occurring during the impact process. An analytic formula for the Taylor impact was deduced from motion equations of projectiles, and the new meshless method, reproducing kernel particle method was applied to numerically simulate the Taylor impact. Theoretical analysis on the Taylor impact of five practical materials shows that the analytic results are in agreement with the experimental and numerical.
- mechanics of explosion /
- dynamic yield strength /
- RKPM /
- Taylor impact /
- equation of motio

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