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通过钨球对轻型装甲钢板垂直侵彻试验,得到各种弹靶条件下极限贯穿速度值。运用能量守恒原理对试验数据进行分析,经二元线性回归得出极限贯穿条件下钨球撞击动能在侵彻中的能量分配规律。结果表明开坑能耗大于冲塞能耗,二者比值随靶板相对厚度的增大而增大。由开坑能耗和冲塞能耗表达式,导出了本试验条件下的开坑抗力Y和冲塞剪切抗力τy,结果表明,开坑抗力大于靶板材料强度,而剪切抗力小于靶板材料剪切强度。同时本文还对刚性假设带来的极限贯穿速度计算误差进行了定量分析,数据表明,误差值随靶板相对厚度的增大而增大。
Through tungsten ball on the vertical penetration of light armor plate test, get all kinds of targets under the conditions of the penetration rate limit. The energy conservation principle is used to analyze the experimental data, and the energy distribution law of kinetic energy of tungsten ball impacting in penetration is obtained through binary linear regression. The results show that the energy consumption of pit opening is larger than that of plugging, and the ratio of them increases with the relative thickness of target board. The open pit resistance Y and the plugging shear resistance τy under the test conditions are derived from the energy consumption of open pit and the energy consumption of plugging. The results show that the open pit resistance is greater than the strength of the target material and the shear resistance is less than the target Sheets material shear strength. At the same time, this paper also quantitatively analyzed the calculation error of ultimate penetration velocity caused by the rigid assumption. The data show that the error value increases with the relative thickness of the target.