| 靶体响应力函数的确定方法及其在侵彻力学中的应用 |
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| 引用本文： | 何涛,文鹤鸣.靶体响应力函数的确定方法及其在侵彻力学中的应用[J].中国科学技术大学学报,2007,37(10):1249-1261. |
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| 作者姓名： | 何涛 文鹤鸣 |
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| 作者单位： | 中国科学技术大学中国科学院材料力学行为和设计重点实验室,安徽合肥,230027 |
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| 基金项目： | 南京信息工程大学科研基金资助. |
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| 摘 要： | 首先,介绍了力函数的确定方法包括经验法、理论分析法和数值模拟法.其中经验法中给出了Forrestal半经验公式和改进的Wen半经验公式;理论分析法中详细介绍了空穴膨胀理论及其研究进展;数值模拟方法中模拟了半无限大材料中的球形和柱形空穴膨胀模型,并将模拟得到的结果与理论解进行了比较,发现二者吻合得很好.最后,给出了靶体响应力函数在侵彻力学中的应用.
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| 关 键 词： | 靶体响应 力函数 侵彻 弹丸 靶板 空穴膨胀理论 数值模拟 |
| 文章编号： | 0253-2778（2007）10-1249-13 |
| 修稿时间： | 2007-06-13 |
Determination of the analytical forcing function of target response and its applications in penetration mechanics |
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| HE Tao,WEN He-ming.Determination of the analytical forcing function of target response and its applications in penetration mechanics[J].Journal of University of Science and Technology of China,2007,37(10):1249-1261. |
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| Authors: | HE Tao WEN He-ming |
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| Institution: | CAS Key Laboratory for Mechanical Behaviour and Design of Materials, University of Science and Technology of China, Hefei 230027, China |
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| Abstract: | The approaches to determining the forcing function including empirical,analytical and computational methods were reviewed.In empirical methods,Forrestal's semi-empirical equation was given whilst Wen's semi-empirical equation was modified to obtain the empirical transient forcing functions;in analytical methods,cavity expansion approximations were described;in computational methods,finite element method was used to simulate the cavity expansion and the numerically obtained radial stress on the cavity surface was found to be in good agreement with that derived theoretically.Finally,the applications of the analytical forcing function in Penetration Mechanics were discussed. |
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| Keywords: | target response forcing function penetration projectile target cavity expansion theory numerical simulation |
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