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中文摘要：
爆轰聚能经常被应用于工程爆破切割，为了探索新的聚能爆破形式，本文应用无网格MPM法对圆柱简装药和导爆索多点起爆形式的爆轰波碰撞聚能问题进行三维数值模拟，采用显式积分算法完成爆轰波形成和汇聚过程以及爆轰压力场分布的数值计算，并将数值模拟结果与实验结果做了对比分析。由此验证了无网格MPM法的准确性，也为炸药聚能爆破提供了新的思路和高效的操作方法。
英文摘要：
Assembling energy of detonation waves is usually applied in blast cutting project. To explore a kind of new method for assembling energy, one column shape charge with multi-lighter points is designed. Collision of detonation waves and pressure field of explosion products are simulated by using the material point method with explicit algorithm. By comparison with experiments,numerical simulation of the material point method can attain better calculation precision. Furthermore,one new technique can be also provided for assembling energy of detonation waves
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Preparation of carbon-encapsulated alloy nanomaterials by detonation decomposition of nitrate comple
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