| Computational Simulation of Hypervelocity Penetration Using Adaptive SPH Method |
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| 作者姓名： | QIANG Hongfu MENG Lijun |
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| 作者单位： | [1]No. 201 Faculty, Xi＇an Hi-Tech Institute, Xi＇an 710025, China [2]No. 803 Facuhy, Northwestern Polytechnical University, Xi＇an 710072, China |
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| 摘 要： | The normal hypervelocity impact of an Al-thin plate by an Al-sphere was numerically simulated by using the adaptive smoothed particle hydrodynamics （ASPH） method. In this method, the isotropic smoothing algorithm of standard SPH is replaced with anisotropic smoothing involving ellipsoidal kernels whose axes evolve automatically to follow the mean particle spacing as it varies in time, space, and direction around each particle. Using the ASPH, the anisotropic volume changes under strong shock condition are captured more accurately and clearly. The sophisticated features of meshless and Lagrangian nature inherent in the SPH method are kept for treating large deformations, large inhomogeneities and tracing free surfaces in the extremely transient impact process. A two-dimensional ASPH program is coded with C ＋ ＋. The developed hydrocode is examined for example problems of hypervelocity impacts of solid materials. The results obtained from the numerical simulation are compared with available experimental ones. Good agreement is observed.
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| 关 键 词： | 自适应平滑粒子水动力学 超速渗透 数字模拟 铝膜板 固体材料 变形 |
| 收稿时间： | 2006-06-25 |
Computational Simulation of Hypervelocity Penetration Using Adaptive SPH Method |
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| QIANG Hongfu MENG Lijun.Computational Simulation of Hypervelocity Penetration Using Adaptive SPH Method[J].Transactions of Tianjin University,2006,12(B09):75-78. |
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| Abstract: | |
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| Keywords: | adaptive SPH hypervelocity penetration meshfree method numerical simulation |
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