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提出了一种基于自由曲面的流线型结构特征造型方法,并将其应用于200kmh电动车组“先锋号”的流线型结构设计之中.流线型结构特征所描述的实体模型对自由曲面外形的变化具有自适应性,该方法便于流线型结构数据存取和修改,可在自由曲面外形和流线型结构各种参数多次修改的情况下自动生成流线型结构实体;大幅度地减少了人机交互时间,解决了高速列车流线型结构实体造型过程中设计周期过长的问题.
This paper presents a method of modeling the streamlined structure based on freeform surface and applies it to the design of the streamlined structure of Pioneer for the 200kmh EMU.The solid model described by the streamlined structure has the following features Adaptability. The method can facilitate the access and modification of the data of the streamline structure, and can automatically generate the streamline structure entity under the condition that the parameters of the freeform surface shape and the streamline structure are modified several times; the man-machine interaction time is greatly reduced, Problems of long design cycle in train streamline structure solid modeling.