材料成型及控制工程(模具方向)毕业设计-英文翻译.doc

毕 业 设 计（论 文） 英 文 翻 译 课题名称 奇瑞A21汽车中支板冲压工艺分析及基于UG的修边冲孔模设计 系 部 材料工程系 专 业 材料成型及控制工程（模具方向） 班 级 学 号 姓 名 指导教师 Functional Modeling in Conceptual Die Design S. B. Tor*, G. A. Britton, and W. Y. Zhang * Singapore-MIT Alliance (SMA) Fellow, SMA-NTU Office, N2-B2C-15 Nanyang Technological University, Nanyang Avenue, Singapore 639798 Abstract—The use of function has been recognized as an important part of the design process over last two decades, especially at the conceptual design stage, due to its critical role in determining the final product’s functionality. Although there are now some general methodologies dealing with functions or reasoning about functions, virtually no commercial CAD system can support conceptual design process due to their focus on geometrical modeling but not functional modeling. This paper presents a functional modeling approach to guide conceptual die design through functional reasoning steps including functional decomposition, functional supportive synthesis and function-structure mapping. The formed functional model provides a good basis to generate various die structures at the conceptual design stage, because function is a higher level of abstraction than structure, and helps to capture the designer’s intent. The functional modeling process has been implemented in a computerized design environment to expedite the conceptual die design process. Index Words—Conceptual design; Die structure design; Functional model; Functional modeling; Functional reasoning 1. INTRODUCTION In engineering design, all products and artifacts have some intended reason behind their existence: the product or artifact functions [1]. In other words, engineering design process should be guided by functions. A crucial early stage in the design process is the conceptual design stage, during which an initial design solution to the design problem is devised to fulfill the required functions [2]. Functional design [3] has become a new perspective towards the