| 无网格方法在爆轰数值模拟中的应用 |
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| 引用本文： | 陈海龙,陈摇娟,初文华,位摇莎.无网格方法在爆轰数值模拟中的应用[J].哈尔滨工业大学学报,2010,42(11):1818-1822. |
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| 作者姓名： | 陈海龙 陈摇娟 初文华 位摇莎 |
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| 作者单位： | 哈尔滨工程大学船舶工程学院;哈尔滨工程大学船舶工程学院;哈尔滨工程大学船舶工程学院;哈尔滨工程大学船舶工程学院 |
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| 基金项目： | 国家自然科学基金资助项目(50779007);青年科学基金资助项目(50809018) |
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| 摘 要： | 以SPH算法为代表的无网格方法在爆轰波的数值模拟中具有明显的优势,采用SPH算法模拟高能炸药水下爆炸爆轰过程,得到了压力、速度等时历曲线.将数值模拟结果与理论和实验方法得到的结果进行了对比分析,表明SPH算法非常适宜处理高能炸药水下爆炸的极短瞬时具有大变形和高度非均匀的动力学极端情形,且求解结果已达到了较高的精度。
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| 关 键 词： | SPH算法 爆轰 无网格 高能炸药 |
Numerical research on the detonation process based on SPH method |
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| Affiliation: | CHEN Hai-long,CHEN Juan,CHU Wen-hua,WEI Sha(College of Shipbuilding and Engineering,Harbin Engineering University,Harbin 150001,China;CHEN Hai-long,CHEN Juan,CHU Wen-hua,WEI Sha(College of Shipbuilding and Engineering,Harbin Engineering University,Harbin 150001,China;CHEN Hai-long,CHEN Juan,CHU Wen-hua,WEI Sha(College of Shipbuilding and Engineering,Harbin Engineering University,Harbin 150001,China;CHEN Hai-long,CHEN Juan,CHU Wen-hua,WEI Sha(College of Shipbuilding and Engineering,Harbin Engineering University,Harbin 150001,China |
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| Abstract: | Mesh-free method,such as the SPH method,has great advantage in numerical simulation of deto-nation wave.Based on previous research,the SPH method is applied to simulate the underwater explosion process of high explosives in the paper,and the time-history curves of pressure and velocity are obtained.The numerical results are compared with the theoretical and experimental results,and these show that SPH method is suitable for solving such problems as underwater explosion with extremely large deformation and large inho-mogeneity in dynamic characteristics.The numerical results have reached high precision. |
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| Keywords: | SPH method detonation meshfree high explosive |
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