【摘要】 本文根据引信设计的需要,结合引信的结构特点,对截锥形弹以低速(200～500米/秒)和中速(500～1000米/秒)贯穿薄靶板(包括金属铝板和非金属的木质胶合板)时的动态特性进行了分析和计算。 在建立模型过程中,由于考虑了靶板强度效应的影响,解决了原来一些模型对低速冲击不适用的问题。并通过惯性效应和强度效应的比较,从理论上证明了Zaid和Paul的试验结论:即当冲击速度高于500米/秒时,可忽略强度的影响,而当冲击速度低于500米/秒时,不能忽略强度效应的影响。更多还原

【Abstract】 In this paper, dynamical calculation and analysis are made on penetration of thin plates by truncated conical projectiles in terms of the needs of fuze designing.The impact velocity ranges from 200m/s to 1000m/s (including both low and high velocities). The target plates include the thin aluminium plate (metal) and the ply wood(non-metal).Because a strength effect of target plates is considered in the establishment of dynamical models, we solve the problem that some previous models are not suitable to low-velocity impact, for example, M. Zaid and B. Paul’s models.[1][2][3] By comparison of inertial effect with strength effect, we theoretically prove Zaid and Paul’s experimental conclusion[3]. Only when the impact velocity is more that 500m/s can the strength effect be neglected. Otherwise this effect can not be neglected.更多还原