| 固体火箭发动机枪击过程数值模拟 |
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| 引用本文： | 庄建华,毛佳,张为华,王占利,胡峰.固体火箭发动机枪击过程数值模拟[J].固体火箭技术,2009,32(4). |
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| 作者姓名： | 庄建华 毛佳 张为华 王占利 胡峰 |
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| 作者单位： | 国防科技大学航天与材料工程学院,长沙,410073 |
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| 摘 要： | 为研究固体火箭发动机枪击安全性,对7.62 mm子弹射击过程进行了数值模拟.根据高速变形条件下功-热转化理论,计算出子弹穿透壳体温升,对灼热弹体与推进剂高速摩擦生热条件下的瞬态热传导问题,建立了相关理论模型,并进行了数值模拟.研究结果表明,子弹以750 m/s初速射击发动机,能使固体推进剂内形成高温热点,为发动机枪击过程模拟提供了新方法.
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| 关 键 词： | 固体火箭发动机 枪击 数值模拟 |
Numerical simulation of the gunshot process of solid rocket motor |
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| ZHUANG Jian-hua,MAO Jia,ZHANG Wei-hua,WANG Zhan-li,HU Feng.Numerical simulation of the gunshot process of solid rocket motor[J].Journal of Solid Rocket Technology,2009,32(4). |
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| Authors: | ZHUANG Jian-hua MAO Jia ZHANG Wei-hua WANG Zhan-li HU Feng |
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| Institution: | College of Aerospace and Material Engineering;NUDT;Changsha 410073;China |
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| Abstract: | The armour-piercing process of solid rocket motor case by 7.62 mm projectile was simulated numerically using LS-DYNA in order to study gunshot security.The rise of the projectile's temperature during penetrating process was calculated based on work-heat transforming theory under high-rate distortion.A theoretical model was established for transient heat-conduction resulted from friction between hot projectile and solid propellant,and numerical simulation performed.The results indicate that hot spot can be g... |
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| Keywords: | solid rocket motor gunshot numerical simulation |
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