| 强激光照射下双层壳体温度场的数值模拟 |
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| 引用本文： | 吴非,周建平,雷勇军.强激光照射下双层壳体温度场的数值模拟[J].国防科技大学学报,2003,25(4):5-9. |
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| 作者姓名： | 吴非 周建平 雷勇军 |
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| 作者单位： | 国防科技大学航天与材料工程学院,湖南,长沙,410073 |
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| 基金项目： | 国家杰出青年基金资助项目(19925209)，湖南省自然科学基金资助项目(02JJY2009) |
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| 摘 要： | 运用有限元法对强激光照射下双层壳体的温度场进行了数值模拟。详细分析了在激光功率一定的情况下,外层壳体的热传导系数、比热和厚度的变化对内层壳体温升的影响。计算中考虑了内层壳体的热损耗效应。此外,根据材料参数的温度相关性,分析了内层壳体材料参数随温度的变化特性对其温升效应的影响,并将计算结果与强激光照射下单层壳体的温度场进行了比较,得到一些有意义的结论。
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| 关 键 词： | 强激光 双层壳体 温度场 |
| 文章编号： | 1001-2486(2003)04-0005-05 |
| 收稿时间： | 2003/3/11 0:00:00 |
| 修稿时间： | 2003年3月11日 |
Numerical Simulation of Temperature Field in the Two-layered Shell Irradiated by the Intensive Laser Beam |
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| WU Fei,ZHOU Jianping and LEI Yongjun.Numerical Simulation of Temperature Field in the Two-layered Shell Irradiated by the Intensive Laser Beam[J].Journal of National University of Defense Technology,2003,25(4):5-9. |
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| Authors: | WU Fei ZHOU Jianping and LEI Yongjun |
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| Institution: | College of Aerospace and Materials Engineering, National Univ. of Defense Technology, Changsha 410073, China;College of Aerospace and Materials Engineering, National Univ. of Defense Technology, Changsha 410073, China;College of Aerospace and Materials Engineering, National Univ. of Defense Technology, Changsha 410073, China |
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| Abstract: | The temperature field distribution in the two-layered shell is simulated numerically by using the finite element method. The influence of material properties of the outer shell on the temperature rise in the inner shell is analyzed under a given laser power. The results indicate that the difference of material properties of the outer shell in specific, thermal conductivity as well as its thickness can greatly change the temperature of the inner shell. The thermal wastage in the inner shell between the inner and outer shell are investigated in the process of computation. Moreover, the effect of temperature-depending material properties of the inner shell on its temperature rise is presented. And some significant conclusions are reached by comparing with the temperature field distribution of the one-layered shell irradiated by the intensive laser beam. |
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| Keywords: | intensive laser beam two-layered shell temperature f ield |
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