飞机复合材料构件设计、分析和制造数据集成

实施复合材料构件数字化定义是实现复合材料构件设计、分析和制造数据集成的基础.复合材料构件数字化定义包括几何建模和材料结构建模.总结了材料结构建模过程和材料铺放数据的组成,指出当前复合材料构件分析无法基于最终的真实纤维路径进行,采用离散三角形单元的真实纤维路径来近似铺层纤维的最终状态,并利用可扩展标记语言(XML,Extensive Markup Language)文件对材料铺放数据进行了描述,探讨了通过纤维路径数据到有限元网格的自动映射实现材料铺放数据的自动传递.最后,研究了设计数据到排样下料系统和激光投影系统的集成和接口数据组织方法. 

Data integration of design, analysis and manufacture for aircraft composite structures

Implementing digital composite structure definition is the base of achieving the data integration of design,analysis and manufacture for aircraft composite structures.The digital composite structure definition consists of the modeling of geometry and the modeling of material structure.The process of material structure modeling and data contents of laminate lay-up definition were summarized.The fact that today the composite structures can not be analyzed based on the final shape with true fiber orientations was put forward.True fiber orientations of discrete triangle elements were used to approximate the final state of ply fibers and XML(extensive markup language) file was used to describe laminate lay-up definition data.Using automatic mapping of fiber orientation data to the finite element mesh to obtain the automatic data transfer from design to analysis was discussed.At last,the data integration of design with cutting system and laser projection system and the organization of interface data were studied.