Abstract Different materials are cut by the experiment platform of abrasive water jet. The research is mainly focused on the abrasive impact to metal target material damage and temperature rise. SPH algorithm and Lagrange model is established for numerical simulation of the pressure. The pressure and speed characteristics are analyzed during the cutting process of abrasive particles, compared with the experiment. The results show that abrasive water jet has the ability to cut metal target, and temperature keeps at a safe level cutting abandoned ammunition. The stress generated by cutting is mainly concentrated in the central position. It distributes in a circular ring along the radial direction, which conforms to the experimental results of material failure. In the process of cutting, the velocity distribution of the target material presents a fluctuating distribution, which is related to the impact pressure and the characteristics of the material. When the pressure reaches 40 MPa, an obvious cutting effect can be achieved, and the cutting temperature is in a safe area. The conclusion is obtained that it is feasible to dismantle abandoned ammunition with abrasive water jet under this parameter.

中文翻译：

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废弃弹药材料冷切割可行性试验研究及数值预测

摘要 磨料水射流实验平台对不同材料进行切割。研究主要集中在磨料冲击对金属靶材损伤和温升的影响。建立SPH算法和拉格朗日模型对压力进行数值模拟。分析了磨粒切削过程中的压力和速度特性，并与实验进行了比较。结果表明，磨料水射流具有切割金属目标的能力，温度保持在安全水平，切割废弃弹药。切削产生的应力主要集中在中心位置。沿径向呈圆环分布，符合材料破坏实验结果。在切割过程中，目标材料的速度分布呈现波动分布，这与冲击压力和材料特性有关。当压力达到40 MPa时，可达到明显的切割效果，且切割温度处于安全范围内。得出在该参数下用磨料水射流拆除废弃弹药是可行的结论。