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采用微观分析实验研究侵彻实验后剩余弹体表面的质量侵蚀痕迹,确定和总结弹体质量侵蚀的物理机制.基于微观分析实验结果,改进Archard模型的形式,获得表征切削弹体头部材料的切削速度,考虑侵彻过程中弹靶间的摩擦生热对切削因子的影响,采用温度项连接摩擦与切削两种机制,采用节点回退法表征弹体头部形状的变化,建立融合摩擦与切削两种机制的质量侵蚀模型,对比数值计算结果与国内外典型的实验数据,证实该弹体质量侵蚀模型有效.
The microscopic analysis experiment is conducted to study the mass erosion marks on the surface of the remaining projectile after the penetration experiment and to determine and summarize the physical mechanism of projectile mass erosion.Based on the microscopic analysis results, the Archard model is modified to obtain the characterization of the material of the cutting projectile Considering the influence of the frictional heat generation between the projectile and target during the penetration process on the cutting factor, the temperature term is used to connect the two mechanisms of friction and cutting. The nodal regression method is used to characterize the change of projectile’s head shape. Cutting the mass erosion models of the two mechanisms and comparing the numerical results with the typical experimental data at home and abroad, it is verified that the mass erosion model of the shells is effective.