提出一种新颖的遮挡情况分析计算模型,用于分析在导弹战斗部爆炸后一枚战斗部破片穿透飞机蒙皮后能否直接击中要害部件,而不被其它部件阻挡的问题。该模型采用“视线”分析和几何体网格划分相结合的方法进行遮挡判断,原理简单,特别适用于计算机数值方法求解复杂部件间遮挡情况,判断是否构成遮挡、遮挡区域大小。通过仿真,验证了模型的可行性和正确性。适用于飞机优化设计过程中的易损性分析和导弹引战配合分析、导弹引信和战斗部参数优化。

A new mathematic model for analyzing and calculating the degree being covered reciprocally between components of aeroplane was proposed. With it we can analyze that whether a fraction of missile warhead impacts the vital component of aeroplane directly through crust of aeroplane, and cannot be held up midway by other components. The method is very simple, just like judging whether something is covered by sighting, on a condition, that the surface of components of aeroplane must be divided into a lot of little pieces. It is suitable for analyzing and calculating the degree being covered reciprocally between complex components with computer specially. Through simulation calculating, the validity and the feasibility of the new model were validated. It can be applied to study airplane's viability when being hit, to optimize airplane's design, to study the cooperation degree between fuze and warhead of missile, to optimize the parameters of fuze and warhead.