| 坡膛结构变化对弹带挤进过程影响的研究 |
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| 引用本文： | 孙河洋,马吉胜,李伟,刘海平,齐琦.坡膛结构变化对弹带挤进过程影响的研究[J].振动与冲击,2011,30(3):30-33. |
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| 作者姓名： | 孙河洋 马吉胜 李伟 刘海平 齐琦 |
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| 作者单位： | 1. 军械工程学院，河北石家庄 050003; 2. 66362部队装备部，北京 101200 |
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| 摘 要： | 基于弹塑性有限元接触理论，引入了弹带材料的初始损伤及累计损伤模型，对弹带挤进、冲击坡膛的过程进行了理论分析，建立了弹带挤进、冲击坡膛的显式非线性有限元模型。对在两种不同结构坡膛条件下的弹带挤进过程进行了分析计算，得到了挤进过程弹丸及弹带的动力学响应，并通过计算分析了坡膛结构变化对挤进冲击力的影响，揭示了坡膛裂纹的形成机理。
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| 关 键 词： | 坡膛结构 冲击 累计损伤失效 非线性 有限元 |
| 收稿时间： | 2010-5-12 |
| 修稿时间： | 2010-6-28 |
Influence of different bore structures on engraving process on projectile |
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| SUN He-yang,MA Ji-sheng,LI Wei,LIU Hai-ping,QI Qi.Influence of different bore structures on engraving process on projectile[J].Journal of Vibration and Shock,2011,30(3):30-33. |
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| Authors: | SUN He-yang MA Ji-sheng LI Wei LIU Hai-ping QI Qi |
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| Affiliation: | 1. Ordnance Engineering College, Shijiazhuang Hebei 050003, China;2. Equipment Department of Army 66362 Unit, Beijing 101200, China |
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| Abstract: | Based on the elastic-plastic contact finite element theory, an initial damage，progressive damage and failure constitute model of the band was introduced. Explicit dynamic finite element model was built and the impacting and engraving process of the band was analyzed. The impacting and engraving processes for two different structure of bore were computed and their dynamic responses were obtained. The influence of different structures of bore to the impact force was analyzed and the mechanism of crack initiation was revealed. |
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| Keywords: | Bore structure Impact progressive damage and failure nonlinear FEM |
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