| 高速侵彻混凝土弹体的形状演化模拟 |
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| 引用本文： | 何丽灵,陈小伟.高速侵彻混凝土弹体的形状演化模拟[J].力学学报,2011,43(4):707-715. |
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| 作者姓名： | 何丽灵 陈小伟 |
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| 作者单位： | 中国工程物理研究院总体工程研究所 |
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| 基金项目： | 中国工程物理研究院发展基金重点项目(2009A0201009);中国工程物理研究院“双百人才”基金(ZX04001)资助; 中物院总体工程研究所青年创新基金(10cxj17)~~ |
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| 摘 要： | 高速侵彻时, 弹靶间摩擦力所做功全部转变为热并作用于弹体, 假设弹体质量损失来源于弹体表面材料熔化脱落, 可以预测弹体总质量损失. 结合分析得到的弹靶间摩擦功与压力轴向功关系, 通过相应的弹体质量损失分析, 获得侵彻过程中弹体表面各点的回退位移(垂直于弹体轴心线方向), 实现弹体形状演化的模拟. 弹体形状、侵彻深度及质量损失的计算结果均与实验结果基本吻合.
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| 关 键 词： | 形状演化 |
| 收稿时间： | 2010-07-20 |
| 修稿时间： | 2011-02-17 |
SIMULATION OF VARIATION OF PROJECTILE NOSE DURING HIGH-SPEED PENETRATION INTO CONCRETE |
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| He Liling Chen Xiaowei.SIMULATION OF VARIATION OF PROJECTILE NOSE DURING HIGH-SPEED PENETRATION INTO CONCRETE[J].chinese journal of theoretical and applied mechanics,2011,43(4):707-715. |
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| Authors: | He Liling Chen Xiaowei |
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| Institution: | Institute of Structural Mechanics, China Academy of Engineering Physics, Mianyang 621900, China |
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| Abstract: | A formula for estimating total mass loss of projectile was developed with the assumptions of the peeling of molten surface in projectile nose as the primary cause of mass loss and the frictional heat totally accepted by projectile.In combination of the linear relationship between friction work and work done by pressure,the receding displacement of every point on projectile surface,which is vertical to the projectile symmetry axis,is obtained based on the formula for estimating total mass loss.Thereby,the va... |
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| Keywords: | high-speed penetration normal penetration mass abrasion nose blunting variation of nose shape |
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