| 高射速自动机身管热容量及热应力分析 |
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| 引用本文： | 苏晓鹏,钱林方,戴劲松,王茂森.高射速自动机身管热容量及热应力分析[J].南京理工大学学报(自然科学版),2009,33(4). |
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| 作者姓名： | 苏晓鹏 钱林方 戴劲松 王茂森 |
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| 作者单位： | 南京理工大学机械工程学院,江苏,南京,210094 |
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| 摘 要： | 针对高射速自动机在连续射击条件下,身管承受高频、高温及高压冲击作用的特点,采用传热学理论与有限元方法相结合方法,建立了高射速自动机身管热结构耦合分析模型.选取不同管径比的身管为实例,对自动机以高射速连续射击条件下身管的热容量和热应力情况进行了仿真,得出了管壁温度和热应力随连续射弹数的变化趋势及热应力在管壁内的分布规律,在考虑膛压和温度场共同作用下,进一步分析了热应力的存在对不同管径比身管强度安全性的影响.该文分析方法和仿真结果对小口径高射速自动机身管的设计具有一定的参考价值.
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| 关 键 词： | 高射速自动机 连续射击身管 热容量 热应力 |
Thermal Capacity and Thermal Stress Analysis of Rapid-fire Gun Barrel |
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| SU Xiao-peng,QIAN Lin-fang,DAI Jin-song,WANG Mao-sen.Thermal Capacity and Thermal Stress Analysis of Rapid-fire Gun Barrel[J].Journal of Nanjing University of Science and Technology(Nature Science),2009,33(4). |
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| Authors: | SU Xiao-peng QIAN Lin-fang DAI Jin-song WANG Mao-sen |
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| Institution: | School of Mechanical Engineering;NUST;Nanjing 210094;China |
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| Abstract: | In view of the characteristics that the gun barrels should support high frequency,high temperature and high pressure when the rapid-fire guns shoot continuously,a model of thermo-structure coupling based on heat transfer theory and finite element method(FEM) is adopted here.Barrels with different wall thicknesses are selected to analyze the thermal capacity and thermal stress of the barrels.The variations of temperature and thermal stress with continuoucly shooting number and the thermal stress distribution... |
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| Keywords: | rapid-fire guns continuous fire barrels thermal capacity thermal stress |
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