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工程力学  2015 

管-杆伸出式弹芯垂直侵彻半无限靶机理研究

DOI: 10.6052/j.issn.1000-4750.2013.12.1232, PP. 190-196

Keywords: 穿甲力学,垂直侵彻,简化模型,数值模拟,伸出式弹芯,侵彻深度

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Abstract:

基于管-杆伸出式弹芯材料满足刚-塑性本构关系及该弹芯在侵彻过程中视为准定常运动等假设,通过分别对头部、管体、管与杆重合部及杆体等不同侵彻阶段的理论分析与推导,建立起该弹芯垂直侵彻半无限靶的简化模型。在1300m/s~1500m/s的速度范围内,对该弹芯进行了数值模拟与验证试验研究。通过对模型计算、数值模拟及试验结果之间的对比,表明简化模型及数值模拟方法的可靠性,得出了该弹芯垂直侵彻靶板所产生弹坑的形貌特征与形成机制,以及该弹芯在侵彻中的相对优势情况与侵彻深度随速度的变化规律。

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