直升机数字样机区域化上下文设计方法研究

Research on Method of Regionalization Design in Context for Helicopter Digital Mock-up

为提高直升机协同设计效率,提出数字样机区域化上下文设计方法,设计实现该方法的系统框架。结合直升机研发的特点,建立基于AABB层次树的数字样机区域表达数学模型,用于数字样机区域的生成与搜索;运用链接关系图表达数字样机的关联关系,通过数字样机模型链接关系的求解实现模型之间的关联影响性分析。在某型直升机研制过程中采用该方法,提高了数字样机区域化模型的加载效率和准确率,缩短了子系统优化和零组件更改的周期。

In order to improve helicopter collaborative design, a method of regionalization design in context for DMU was proposed and the system frame for implementation of the method was designed. Based on the characteristics of helicopter development, the expression model of DMU regionalization based on hierarchical tree of axis aligned bounding box （AABB） was proposed to search the DMU region; the relationship graphic of model link （RGML） was proposed to express the relationship of model link （RML） in DMU, and the impacts of correlative models in context can be analyzed effectively. The method was used to develop some helicopters, the accuracy rate of models search and the efficiency of models loading from whole helicopter DMU are improved, and the cycle of sub-system optimization and part change is shortened.