| 准球形EFP成型影响因素的数值模拟 |
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| 引用本文： | 王树有,蒋建伟,门建兵. 准球形EFP成型影响因素的数值模拟[J]. 含能材料, 2008, 16(6): 731-733 |
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| 作者姓名： | 王树有 蒋建伟 门建兵 |
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| 作者单位： | 北京理工大学爆炸科学与技术国家重点实验室,北京,100081;北京理工大学爆炸科学与技术国家重点实验室,北京,100081;北京理工大学爆炸科学与技术国家重点实验室,北京,100081 |
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| 基金项目： | 国家部委基础科研项目 |
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| 摘 要： | 采用非线性动力学程序AUTODYN数值模拟了准球形爆炸成型弹丸(EFP)压垮成型过程,研究了药型罩外曲率半径(R2)和壁厚(h)等结构参数对EFP长径比和速度的影响,并对R2=0.76Dk,h=0.136Dk的EFP进行了脉冲X光摄影实验。结果表明,随着药型罩外曲率半径和壁厚的增大,EFP的长径比逐渐减小,EFP速度逐渐降低;获得了形成准球形EFP的药型罩外曲率半径与壁厚对应关系;数值模拟结果与实验结果吻合较好。
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| 关 键 词： | 爆炸力学 爆炸成型弹丸 准球形 结构参数 数值模拟 |
| 收稿时间： | 2008-02-14 |
Numerical simulation of parameters on formation of quasi-spherical EFP |
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| WANG Shu-you. Numerical simulation of parameters on formation of quasi-spherical EFP[J]. Chinese Journal of Energetic Materials, 2008, 16(6): 731-733 |
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| Authors: | WANG Shu-you |
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| Abstract: | The collapse and formation process of quasi-spherical explosively formed projectile(EFP)was simulated by nonlinear dynamic software AUTODYN.Effects of structure parameters of liner outer curvature radius(R2)and liner thickness(h)on the velocity and length/diameter ratio of EFP were studied.Results show that as the increasing of outer curvature radius and liner thickness,velocity and length/diameter ratio of EFP decrease.The relationship between outer curvature radius and liner thickness of the quasi-spherical EFP is obtained.X flash radiographs of EFP with structure parameters h=0.136Dk and R2=0.76Dk are obtained.The results of numerical simulation are well agreement with X flash radiographs. |
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| Keywords: | explosion mechanics explosively formed projectile(EFP) quasi-spherical structure parameter numerical simulation |
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