At present, the design and optimization of the linear explosive separation device mainly depends on experiment, which is not only costly but also low efficient. The introduction of finite element analysis prior to experiment may reduce the cost to design a linear explosive separation device. Herein, arbitrary Lagrangian–Eulerian (ALE) numerical method is utilized to investigate the functioning of an axisymmetric explosive separation device. Firstly, several ALE models are validated via explosive separation experiments and photonic Doppler velocimetry (PDV) measurements, and found to have reasonable accuracy. Then, a series of ALE models are developed to study the transient separation process of an axisymmetric explosive separation device. Multiple factors which may influence the process are identified through parametric study. Especially, it is found that the linear density of the explosive core in the detonating cord and the bottom radius of the v-notch on the separation plate are critical for the accumulation of effective plastic strain at the v-notch. In addition, the material of the protection plate and the angle of the v-notch have a certain influence on the effective plastic strain at the v-notch. The material strength of the protection plate almost has little influence on the effective plastic strain at the v-notch. The study may facilitate the optimal design of the axisymmetric explosive separation device.

目前，线性爆炸分离装置的设计和优化主要依靠实验，不仅成本高，而且效率低。在实验前引入有限元分析可以降低设计线性爆炸分离装置的成本。在此，任意拉格朗日-欧拉 (ALE) 数值方法用于研究轴对称爆炸分离装置的功能。首先，通过爆炸分离实验和光子多普勒测速 (PDV) 测量验证了几种 ALE 模型，并发现其具有合理的准确性。然后，开发了一系列ALE模型来研究轴对称爆炸分离装置的瞬态分离过程。通过参数研究确定了可能影响过程的多个因素。尤其，发现导爆索中炸药芯的线密度和隔板上V形缺口的底部半径对V形缺口处有效塑性应变的积累至关重要。另外，保护板的材料和V型缺口的角度对V型缺口处的有效塑性应变有一定的影响。保护板的材料强度对V型缺口处的有效塑性应变几乎没有影响。该研究有助于轴对称爆炸分离装置的优化设计。保护板的材料和V型缺口的角度对V型缺口处的有效塑性应变有一定的影响。保护板的材料强度对V型缺口处的有效塑性应变几乎没有影响。该研究有助于轴对称爆炸分离装置的优化设计。保护板的材料和V型缺口的角度对V型缺口处的有效塑性应变有一定的影响。保护板的材料强度对V型缺口处的有效塑性应变几乎没有影响。该研究有助于轴对称爆炸分离装置的优化设计。