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为研究德马耳公式对合金破片穿甲性能的适用范围,采用该公式对钨合金球形破片在不同靶板厚度下的极限穿靶速度进行理论预测,采用数值模拟及靶试考核的方式对其验证。结果表明:由德马耳公式计算得出的极限穿靶速度,在靶板厚度为15 mm时,与数值模拟和靶试考核的结果一致;而靶板厚度为20 mm时不能侵彻靶板,与数值模拟和靶试考核结果差异较大。由此得出,德马耳公式适用于低速和高速下极限穿靶速度的预测,而对于超速穿甲具有一定的局限性。
In order to study the application range of Deer ear formula to the puncture performance of alloy fragments, this formula is used to predict the ultimate wear rate of tungsten alloy spherical fragments under different target thickness. The numerical simulation and the target test verification. The results show that the ultimate penetration rate calculated by Demax formula is consistent with the results of numerical simulation and target assessment when the target thickness is 15 mm. However, the target penetration velocity can not reach the target when the target thickness is 20 mm , And numerical simulation and target test results vary greatly. It is concluded that the DeMerr formula is suitable for the prediction of the ultimate penetration velocity at low speed and high speed, but has some limitations on the speeding penetration.