[1]李 磊,马宏昊,沈兆武,等.聚能射流侵彻钢靶的SPH-FEM数值模拟[J].南京理工大学学报(自然科学版),2013,37(02):226.
 Li Lei,Ma Honghao,Shen Zhaowu,et al.Numerical simulation of shaped charge jet perforating steel target by SPH-FEM coupling method[J].Journal of Nanjing University of Science and Technology,2013,37(02):226.
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聚能射流侵彻钢靶的SPH-FEM数值模拟
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《南京理工大学学报》(自然科学版)[ISSN:1005-9830/CN:32-1397/N]

卷:
37卷
期数:
2013年02期
页码:
226
栏目:
出版日期:
2013-04-30

文章信息/Info

Title:
Numerical simulation of shaped charge jet perforating steel target by SPH-FEM coupling method
作者:
李 磊1马宏昊1沈兆武1夏红兵2
1.中国科学技术大学 工程科学学院,安徽 合肥 230027; 2.安徽理工大学 土木学院,安徽 淮南 232001
Author(s):
Li Lei1Ma Honghao1Shen Zhaowu1Xia Hongbing2
1.School of Engineering Science,University of Science and Technology of China,Hefei 230027 China; 2.Department of Civil Engineering,University of Science and Technology of Anhui,Huainan 232001,China
关键词:
光滑粒子-有限元耦合方法 聚能射流 侵彻 钢靶 数值模拟
Keywords:
smoothed particle hydrodynamics-finite element method shaped charge jet perforating steel target numerical simulation
分类号:
O358
摘要:
为了探讨光滑粒子-有限元耦合方法(SPH-FEM)在多介质、大变形问题三维数值模拟中的优越性和有效性,以聚能射流侵彻45#钢靶为例进行三维建模,采用LS-DYNA动力学有限元软件进行仿真。通过与流固耦合方法(ALE)仿真结果相比较分析其优越性,通过与理论计算和实验结果相比较分析其有效性。研究表明:SPH-FEM方法计算的变形图像比ALE方法更清晰,计算结果更精确,计算过程更稳定,且计算效率提高1倍; SPH-FEM方法计算的钢靶穿深、孔径的误差均小于5%。该耦合算法对于模拟多介质、大变形问题比ALE方法有效和优越。
Abstract:
In order to analyze the validity and the superiority of the smoothed particle hydrodynamics-finite element coupling method(SPH-FEM)applied to multi-material and large deformation problems,an example of shaped charge jet penetrated into target is simulated by the dynamics finite element software LS-DYNA.The superiority and validity of SPH-FEM are certified by comparing the results with the arbitrary Lagrangian-Eulerian method(ALE)results,theoretical and experimental results respectively.Compcred with ALE, SPH-FEM has clearer images,more accurate results,and more stable calculation process.The computational efficiency is improved by about 100%,and the error of the penetration depth and the hole size is less than 5%.Therefore,the coupling method is superior for simulating multi-material and large deformation problems.

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相似文献/References:

[1]吴敏林.聚能射流对玻璃钢侵彻规律的研究[J].南京理工大学学报(自然科学版),1984,(04):93.

备注/Memo

备注/Memo:
收稿日期:2011-11-17 修回日期:2012-09-05
基金项目:国家自然科学基金重点项目(51134012); 国家自然科学基金面上项目(51174183)
作者简介:李磊(1986-),男,博士生,主要研究方向:爆炸力学,E-mail:lilei46@mail.ustc.edu.cn;
通讯作者:马宏昊(1980-),男,博士,副教授,主要研究方向:爆炸力学,E-mail:hhma@ustc.edu.cn。
更新日期/Last Update: 2013-04-30