滑移爆轰密封的初步数值模拟

基金项目: 国家自然科学基金项目(11372294)

Preliminary simulation of blast shutter driven by glancing detonation

Institute of Fluid Physics, China Academy of Engineering Physics, Mianyang 621999, Sichuan, China

摘要: 利用有限元方法，通过数值模拟得到爆炸密封铝、铜封管密封所需炸药药量；在此基础上，利用光滑粒子法对爆炸密封模型进行优化，分析炸药、保护外壳等形状等对封管密封性能的影响。基于对计算结果的分析，确定实验模型。实验回收结果和数值模拟结果符合较好，表明数值模拟结果对实验设计有指导作用。
- 爆炸力学 /
- 光滑粒子方法 /
- 爆炸密封 /
- 封管 /
- 滑移爆轰
Abstract: The mass of explosive which the aluminum/copper cylinder shells were blasted shutter was found with finite element methods. And on the basis of this, the blast shutter models were simulated many times by the smoothed particle hydrodynamics method to achieve optimization. Then the experimental models were determined by comparing the simulation results. The experimental results agree with the simulation results. So the simulation results can be helpful for understanding the experimental results, and it saves the time and increases the efficiency.
- mechanics of explosion /
- smoothed particle hydrodynamics method /
- blast shutter /
- sealing tube /
- glancing detonation

图 1 JASPER爆炸密封照片^[2]

Figure 1. The picture of blast shutter with JASPER^[2]

下载: 全尺寸图片幻灯片

图 2 计算模型

Figure 2. The model for simulation

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图 3 铝封管内壁上均布的10个位置的粒子速度历史曲线

Figure 3. Particle velocity-time curves of ten points at the inwall of the aluminum sealing tube

下载: 全尺寸图片幻灯片

图 4 铜封管内壁上均布的10个位置的速度历史曲线

Figure 4. Particle velocity-time curves of ten points at the inwall of the copper sealing tube

下载: 全尺寸图片幻灯片

图 5 数值模拟得到的图像和实验回收样品的照片

Figure 5. The image obtained by numerical simulation and the photo of the recoverd specimen in experiment

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图 6 炸药形状的优化结果

Figure 6. Optimization of explosive charge shape

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图 7 优化后的数值模拟模型

Figure 7. Optimization of numerical simulation models

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图 8 铝封管实验结果和计算结果的比较

Figure 8. Comparison between simulation and experiment for the aluminum sealing tube

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图 9 铜封管实验结果和计算结果的比较

Figure 9. Comparison between simulation and experiment for the copper sealing tube

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表 1 材料参数

Table 1. Material parameters

下载: 导出CSV

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