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现有双层板结构弹道极限方程是在特定工程背景下研究得出的,方程的通用性和预测精度有待完善。由于双层板超高速撞击物理特性复杂,综合理论分析、数值仿真和试验研究的方法,对双层板弹道极限方程进行综合建模。基于量纲分析方法建立双层板弹道极限方程的一般形式,根据弹道极限方程的一般形式设计仿真工况,根据数值仿真结果确定弹道极限方程的指数和系数,最后应用优化方法修正方程的系数得到双层板弹道极限方程。综合建模方程对试验数据的预测精度比经验方程有显著提高,表明综合建模方程更适用于预测双层板结构的弹道极限。
The existing ballistic limit equation of double-deck structure is studied under the background of specific engineering. The universality of the equation and the prediction accuracy need to be improved. Due to the complex physical characteristics of the hypervelocity impact of the double-layer plate, the comprehensive theoretical analysis, numerical simulation and experimental research methods are used to comprehensively model the ballistic limit equation of the double-layer plate. Based on the dimensional analysis method, the general form of the ballistic limit equation of the double-layer plate is established. The simulation condition is designed according to the general form of the ballistic limit equation. The exponential and the coefficient of the ballistic limit equation are determined according to the numerical simulation results. Finally, Double Layer Ballistic Limit Equation. The prediction accuracy of the integrated modeling equation to the experimental data is significantly higher than that of the empirical equation, indicating that the integrated modeling equation is more suitable for predicting the ballistic limit of the double-deck structure.