双层板超高速撞击弹道极限方程综合建模  

Integrated Method for Ballistic Limit Equations of Double Plate under Hypervelocity Impact

作　　者：徐小刚[1] 贾光辉[1] 黄海[1] 闫军[2] 

机构地区：[1]北京航空航天大学宇航学院,北京100191 [2]中国空间技术研究院,北京100094

出　　处：《系统仿真学报》2011年第1期172-176,共5页Journal of System Simulation

摘　　要：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。Many ballistic limit equations have been developed to evaluate the safety of double plate under hypervelocity impact. The equations need to be improved because each equation can only be used to evaluate penetration for a specific set of parameters. Integrated method was achieved to establish the ballistic limit equations of double plate. The general expression of ballistic limit equations was set up with dimension analysis, simulation model was designed with univariate searchtechnique, the ballistic limit was achieved with simulation and the parameters in the general expression were established with linear regression method. Finally, the coefficients were modified with test data and the ballistic limit equations of double plate were established. Compared with the experiment, which shows the equations achieved have better precision to evaluate the ballistic limit of double plate.

关 键 词：超高速撞击 弹道极限方程 双层板 量纲分析 

分 类 号：V423.7[航空宇航科学与技术—飞行器设计]