圆柱形弹药空气中爆炸相似性规律

针对战场损伤试验中弹药费用高、使用风险系数大的问题,采用量纲分析的方法对圆柱形弹药相似性模型的建立方法进行分析,研究原型同相似性模型之间冲击波峰值压力的关系,利用有限元仿真软件AUTODYN对冲击波传播过程进行数值仿真,并结合实弹试验数据对相似模型的有效性进行验证。研究结果表明,AUTODYN仿真结果同量纲分析结果一致,同时与实弹试验结果也吻合较好,说明在实际试验中可以使用缩比模型替代原型进行试验。该研究为弹药缩比模型在战场损伤试验中的使用提供了理论基础,具有一定的工程价值。

Similarity law of cylindrical ammunition explosions in air

In order to solve the issues of high cost and large risk factor of ammunition explosion in the battlefield damage test, the method of dimensional analysis is used to analyze the establishment method of cylindrical ammunition similar models. The explosive power field relationship between different similar models and an original model is studied. The AUTODYN finite element simulation software is used to simulate the explosive power field, and the effectiveness of the similar models is verified by real-experiment data. The results show that the simulated results are consistent with the results of both the dimensional analysis and the actual tests. Therefore, in the actual test, the similar model can be used instead of the original model. This study provides a theoretical basis for the use of the ammunition similar model in battlefield damage test and has certain engineering value.