| 近水面水下爆炸对结构冲击的数值模拟 |
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| 引用本文： | 刘科种,徐更光,辛春亮,杨振磊,秦健. 近水面水下爆炸对结构冲击的数值模拟[J]. 兵工学报, 2010, 0(Z1) |
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| 作者姓名： | 刘科种 徐更光 辛春亮 杨振磊 秦健 |
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| 作者单位： | 北京理工大学爆炸科学与技术国家重点实验室;中国运载火箭技术研究院;海军装备研究院; |
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| 摘 要： | 采用AUTODYN数值计算软件,对彭托利特炸药近水面爆炸时对圆柱壳体的冲击加载过程进行了数值模拟。计算时,在炸药及其附近水域建立足够细密的二维Euler网格模型,以捕捉初始冲击波的高频特征;并将计算结果映射到三维流固耦合模型中继续计算,较好地解决了计算精度和计算耗时之间的矛盾;同时选择了合理的材料模型参数和网格单元类型。数值计算结果与实验吻合较好。计算方法对结构抗冲击数值模拟具有一定的参考意义。
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| 关 键 词： | 爆炸力学 冲击加载 AUTODYN数值模拟 |
Numerical Simulation for Structure Subjected to Underwater Explosion Shock Wave in Shallow-water |
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| LIU Ke-zhong,XU Geng-guang,XIN Chun-liang,YANG Zhen-lei,QIN Jian. Numerical Simulation for Structure Subjected to Underwater Explosion Shock Wave in Shallow-water[J]. Acta Armamentarii, 2010, 0(Z1) |
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| Authors: | LIU Ke-zhong XU Geng-guang XIN Chun-liang YANG Zhen-lei QIN Jian |
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| Affiliation: | LIU Ke-zhong1,XU Geng-guang1,XIN Chun-liang2,YANG Zhen-lei1,QIN Jian1,3(1.State Key Laboratory of Explosion Science and Technology,Beijing Institute of Technology,Beijing 100081,China,2.China Academy of Launch Vehicle Technology,Beijing 100076,3.Naval Academy of Armament,Beijing 100073,China) |
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| Abstract: | Using numerical calculation software AUTODYN,the simulation for a cylinder shell subjected to underwater explosion shock wave generated by Pentolite explosive in shallow-water was carried out.In the calculation,a 2-D Euler model with fine meshes in explosive and its nearby water was established to catch the high frequency characteristic of the shock wave;the calculated results for 2-D model were mapped to a 3-D liquid-coupling-solid model for further calculation to solve the contradiction between calculatio... |
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| Keywords: | explosion mechanics shock wave loading AUTODYN numerical simulation |
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