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弹体高速侵彻过程中,头部会受到不同程度的磨损,影响其侵彻性能.基于Jones模型,将引起弹体质量损失的切削与磨蚀作用统一考虑为单位面积切向作用力f,通过对侵彻实验数据的归纳分析,讨论了f的参数相关性,拟合得到了f与弹体材料屈服强度、靶体混凝土无侧限抗压强度、弹体及靶体骨料硬度的关系.进一步,利用Young公式在其适用范围内的计算结果,对f进行了与弹体尺寸相关的修正,从而得到了两种不同尺寸范围内弹体质量损失的预测公式.
During the high-speed penetration of the projectile, the head will be subjected to different degrees of wear, affecting its penetration performance.Based on the Jones model, the cutting and abrasion effects that cause the mass loss of the projectile are uniformly considered as the tangential force per unit area f, Based on the analysis of the experimental data, the parameter dependence of f was discussed. The relationship between f and the yield strength of the projectile material, the unconfined compressive strength of the target concrete and the hardness of the projectile and the target were obtained. Further, by using the calculation result of Young’s formula within its scope of application, the correction of f with respect to the projectile’s size is carried out, and the prediction formula of projectile mass loss in two different sizes is obtained.