| PTFE/Al含能复合物的本构关系 |
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| 引用本文： | 徐松林,阳世清,张炜,卢芳云. PTFE/Al含能复合物的本构关系[J]. 爆炸与冲击, 2010, 30(4) |
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| 作者姓名： | 徐松林 阳世清 张炜 卢芳云 |
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| 作者单位： | 徐松林,阳世清,张炜,XU Song-lin,YANG Shi-qing,ZHANG Wei(国防科技大学航天与材料工程学院,湖南,长沙,410073);卢芳云,LU Fang-yun(国防科技大学理学院,湖南,长沙,410073) |
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| 摘 要： | 室温下,利用万能材料试验机和分离式霍普金森压杆获得了PTFE/Al含能复合物在应变率10-3~103s-1范围内的压缩应力应变曲线。通过对不同应变率下力学性能的分析,初步建立了材料基于Johnson-Cook塑性模型的压缩本构方程,考虑了材料的应变硬化效应和应变率效应。利用该方程进行的PTFE/Al弹丸侵彻钢靶板的数值模拟结果与实际情况较符合,验证了该方程的可靠性和合理性,对PTFE/Al材料的实际应用也具有一定的指导作用。
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| 关 键 词： | 固体力学 本构关系 压缩 含能材料 |
A constitutive relation for a pressed PTFE/Al energetic composite material |
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| XU Song-lin,YANG Shi-qing,ZHANG Wei,LU Fang-yun. A constitutive relation for a pressed PTFE/Al energetic composite material[J]. Explosion and Shock Waves, 2010, 30(4) |
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| Authors: | XU Song-lin YANG Shi-qing ZHANG Wei LU Fang-yun |
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| Affiliation: | XU Song-lin1,YANG Shi-qing1,ZHANG Wei1,LU Fang-yun2(1.College of Aeronautic , Material Engineering,National University of Defense Technology,Changsha 410073,Hunan,China,2.College of Science,China) |
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| Abstract: | The compressive behaviors of a pressed PTFE/Al energetic composite material were experimentally investigated by split Hopkinson pressure bars and quasi-static behaviors by a universal testing machine at room temperature.Stress-strain curves of the material were obtained in the strain rate range from 10-3 s-1 to 103 s-1.According to the analysis on the compressive behavior at different strain rates,the constitutive relation considering strain-hardening effect and strain rate effect were developed based on th... |
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| Keywords: | PTFE/A1 |
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