| 引用本文: | 崔伟峰,曾新吾.SPH算法在超高速碰撞数值模拟中的应用.[J].国防科技大学学报,2007,29(2):43-46.[点击复制] |
| CUI Weifeng,ZENG Xinwu.Smoothed Particle Hydrodynamics Algorithm Applied in Numerical Simulation of Hypervelocity Impact[J].Journal of National University of Defense Technology,2007,29(2):43-46[点击复制] |
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| SPH算法在超高速碰撞数值模拟中的应用 |
| 崔伟峰1, 曾新吾2 |
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(1.国防科技大学 理学院，湖南 长沙 410073;2.国防科技大学 光电科学与工程学院，湖南 长沙 410073)
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| 摘要: |
| 采用大型动力学软件Ls-dyna中的SPH求解器，对球形弹丸超高速碰撞靶板的过程进行数值模拟。给出由于碰撞速度不同，而引起的不同的碎片云图像，以及不同的靶板破碎孔的尺寸。同时模拟了入射角度不同，而得到不同的超高速碰撞物理过程。初步分析结果表明数值模拟结果是合理的，较清晰地模拟了超高速碰撞下碎片云的生成、膨胀过程。另外，通过数值模拟结果与实验结果的比较分析，表明SPH方法得到的结果能描述相应的超高速碰撞现象。所以采用SPH算法针对超高速碰撞物理过程进行数值模拟是可行的。 |
| 关键词: 超高速碰撞 SPH算法 数值模拟 碎片云 |
| DOI： |
| 投稿日期：2006-09-28 |
| 基金项目: |
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| Smoothed Particle Hydrodynamics Algorithm Applied in Numerical Simulation of Hypervelocity Impact |
| CUI Weifeng1, ZENG Xinwu2 |
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(1.College of Science, National Univ. of Defense Technology, Changsha 410073，China;2.College of Opto-electronic Science and Engineering，National Univ. of Defense Technology, Changsha 410073，China)
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| Abstract: |
| Based on the gridless SPH numerical technique of Ls-dyna hydrocode, the characteristics of debris clouds originating from impact of spherical projectile on the plate at different velocities were simulated. At the same time the different physical courses due to various impact angles were obtained. The simulation results show a good agreement with those from the experiments presented in the literature concerned. The generation and expansion of debris clouds were clearly simulated. It indicates that the SPH algorithm can make the qualitative description for phenomena of hypervelocity impact, thus proving the feasibility of the numerical simulation of hypervelocity impact on the basis of the SPH algorithm. |
| Keywords: hypervelocity impact SPH algorithm numerical simulation debris clouds |
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