| 锥头弹丸低速撞击下薄金属靶板的穿透 |
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| 引用本文： | 孙炜海,文鹤鸣.锥头弹丸低速撞击下薄金属靶板的穿透[J].固体力学学报,2009,30(4). |
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| 作者姓名： | 孙炜海 文鹤鸣 |
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| 作者单位： | 中国科学院中国科学技术大学材料力学行为和设计重点实验室,合肥,230027 |
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| 摘 要： | 假定薄金属靶板的变形可分为局部变形和整体变形,在此基础上建立了一个新的分析模型,对固支薄金属靶板的低速穿透进行评估.靶板的局部变形分析通过准静态柱形空穴膨胀理论结合靶板的自由表面效应修正函数,给出了靶板对弹丸的阻力表达式,然后计算出局部变形耗能;整体变形分析采用了Wen-Jones模型的近似准静态方法,通过载荷-位移关系和虚功原理计算整体变形耗能.推出了锥头弹丸穿透金属靶板的耗能公式和弹道极限公式.模型预测结果与实验数据进行了比较,发现二者吻合得较好.
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| 关 键 词： | 锥头弹丸 低速撞击 金属靶板 穿透 弹道极限 |
PERFORATION OF THIN METAL PLATES STRUCK BY CONICAL-NOSED PROJECTILES AT RELATIVELY LOW VELOCITIES |
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| Weihai Sun,Heming Wen.PERFORATION OF THIN METAL PLATES STRUCK BY CONICAL-NOSED PROJECTILES AT RELATIVELY LOW VELOCITIES[J].Acta Mechnica Solida Sinica,2009,30(4). |
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| Authors: | Weihai Sun Heming Wen |
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| Institution: | CAS Key Laboratory for Mechanical Behavior and Design of Materials;University of Science and Technology of China;Hefei;230027 |
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| Abstract: | This paper examines theoretically the perforation of fully-clamped thin metallic plates struck by conical-nosed projectiles at relatively low velocities.Based upon the assumption that the plate deformation comprises local deformation and global response,an energy balance model is established.The total amount of energy dissipated by targets is divided into two parts,i.e.energy dissipated local piercing and the energy absorbed by global deformation.The first part is evaluated from the quasi-static cylindrical... |
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| Keywords: | conical-nosed projectiles low velocity impact metallic plates perforation ballistic limit |
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