大型舰船补给环境下引信意外跌落冲击响应特性

The Fuze Accidental Drop Impact Response Characterization under Large Ship Replenishment Environment

为了研究舰船在吊装补给转运中全包装引信弹药意外跌落的响应特性问题,通过ANSYS/LS-DYNA软件建立引信弹药包装箱动力学仿真模型,开展了典型跌落环境下引信冲击响应特性分析,获取了引信及安全与解除隔离装置在不同跌落环境下的响应特征规律。搭建了引信包装箱跌落测试环境,测定了典型跌落工况下引信过载数据,验证了引信包装箱动力学仿真模型的准确性。试验验证结果表明引信及包装箱在3 m、12 m水平跌落工况下,仿真与试验过载误差为14.4%、12.0%,脉宽误差分别为2.0%、9.4%。通过进一步仿真计算发现,大高度、垂直,跌落地面为921A舰船甲板的工况下引信安全与解除隔离装置过载峰值最大。不同跌落地面材料下的引信的跌落过载响应大小顺序为:舰船甲板材料921A钢>45号钢板>混凝土。引信的过载响应值随其跌落高度增加迅速增加。引信的安全与解除隔离装置过载响应值随其跌落角度增加先减后增。

A study was conducted on the response characteristics of ships to accidental drops of fully packed fuze munitions during lifting supply transfers.The dynamics simulation model of the fuze and ammunition packaging box was established using the ANSYS/LS-DYNA software.An analysis of the impact response characteristics of the fuze under typical drop environments was carried out,and the response characteristics of the fuze and the safety and de-isolation devices under different drop environments were obtained.Finally,a drop test environment for the fuze box was set up,and the overload data of the fuze under typical drop conditions was measured,verifying the accuracy of the dynamic simulation model of the fuze box.The test validation results showed that the simulation and test overload errors were 14.4%and 12.0%,respectively,and the pulse width errors were 2.0%and 9.4%,respectively,for the fuze and box under the conditions of a 3 m horizontal drop and a 12 m horizontal drop.Further simulation calculations revealed that the peak overloads for the fuze's safety and arming device were greatest for the large altitude,vertical drop to the ground for the 921A ship deck condition.The order of the drop overload response of fuze to different drop floor materials was as follows:ship deck material 921A steel>45 steel plate>concrete.The overload response value of the fuze increased rapidly with the increase of drop height.The overload response value of a fuze's safety and arming device decreased and then increased as its drop angle increased.