| 激光模式对典型金属材料烧蚀影响的数值模拟研究 |
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| 引用本文： | 孙震宇,冉宪文,汤文辉,徐志宏.激光模式对典型金属材料烧蚀影响的数值模拟研究[J].航天器环境工程,2014,31(5):489-494. |
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| 作者姓名： | 孙震宇 冉宪文 汤文辉 徐志宏 |
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| 作者单位： | 国防科学技术大学 理学院 工程物理研究所,长沙,410073 |
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| 摘 要： | 利用自编的LAMP程序计算了铝、镁和钛等3种金属材料的激光烧蚀温度场，重点分析了激光作用模式对烧蚀效果的影响，并考虑了材料表面反射系数随温度变化的情况。计算结果表明，对于同样的金属靶，当光斑和激光平均功率相同时，重频频率小、占空比小的激光烧蚀贯穿靶所需的时间最少。
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| 关 键 词： | SPH方法 激光烧蚀 激光模式 金属材料 温度场 重频频率 |
| 收稿时间： | 4/8/2014 12:00:00 AM |
| 修稿时间： | 9/8/2014 12:00:00 AM |
Numerical study of influence of laser mode on ablating typical metal |
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| Sun Zhenyu,Ran Xianwen,Tang Wenhui,Xu Zhihong.Numerical study of influence of laser mode on ablating typical metal[J].Spacecraft Environment Engineering,2014,31(5):489-494. |
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| Authors: | Sun Zhenyu Ran Xianwen Tang Wenhui Xu Zhihong |
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| Institution: | Institute of Engineering Technological Physics, College of Science, National University of Defense Technology, Changsha 410073, China |
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| Abstract: | The temperature fields of aluminum, magnesium and titanium irradiated by laser are calculated by using the self-developed program LAMP, in which the effect of the laser mode on the ablation is mainly analyzed, while the relation between the reflectance and the temperature is taken into account. The calculated results show that the smaller the repeated frequency and the duty ratio are, the shorter the time to ablate the metal sheet will be at a same average laser power and a same thickness of the metal. |
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| Keywords: | SPH method laser ablation laser mode metallic materials temperature field repeated frequency |
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