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| Relations between material parameters of tungsten-alloy rod and its ballistic performance |
| Received:August 08, 2008 |
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| DOI：10.7511/jslx20093027 |
| KeyWord:tungsten-alloy rod material parameter penetration failure strain |
| Author | Institution |
| 楼建锋 |
北京应用物理与计算数学研究所,北京;中国工程物理研究院北京研究生部,北京 |
| 洪滔 |
北京应用物理与计算数学研究所,北京 |
| 王政 |
北京应用物理与计算数学研究所,北京 |
| 朱建士 |
北京应用物理与计算数学研究所,北京 |
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| Abstract: |
| Through simulations of a tungsten-alloy rod impacting a semi-infinite aluminum-alloy target, the effect of material properties on the ballistic performance of kinetic energy rod was studied in this paper. As for the modeling of an elastic-plastic hydrodynamic material in LS-DYNA program, the primary parameters to describe material properties of the rod includes: failure strain, yield stress and shear modulus, etc. The relations between above parameters and depth of penetration were investigated, and simulation results show that failure strain is the most dominant parameter as far as penetration depth is concerned. In addition, based on these results, numerical simulations of penetration tests within the impact velocity regime from 785m／s to 1924m／s were performed, and the numerical results were in good agreement with the experimental data. |
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