Research Initiation: A Coupled Design-by-Features with Features Abstraction Approach for Simultaneous Product and Process Design

当前研究的长期目标是开发一种全新的计算机辅助几何设计方法，该方法将基于特征的设计方法与从边界表示表面或实体模型中提取特征相结合。这项研究活动的重点是确定在逐特征设计/循环环境中产生的特征。当前研究中基于特征的设计方法使用了一种称为环路的抽象几何实体；特征是根据循环定义的。设计师可以根据高级特征，如肋或凸台进行设计，随后，可以通过修改环来修改特征。循环为设计师提供了灵活性，以产生创造性的设计，从而提供了现有的按功能设计方法所缺乏的功能。无论是通过功能设计还是通过循环设计，新功能——不是有意创造的——都会形成。这些特性通常会影响诸如可制造性、可装配性等问题。这些特征是通过一组循环映射（或特征映射）确定的。本文研究了这些映射的确定及其完备性。这些映射的计算机实现由行业专家执行和验证。

9410359 Gadh The long-term goal of the current research is to develop a fundamentally new approach to computer-aided geometric design which integrates a features-based design approach with feature abstraction from boundary representation surface or solid models. The focus of this research activity is on the determination of features generated in a design-by-features/loops environment. The features-based design approach in the current research uses an abstract geometric entity called a loop; features are defined in terms of loops. A designer may design in terms of high- level features such as the rib or boss, and subsequently, may modify features by modifying loops. The loop provides the designer the flexibility to generate creative designs thus providing a function that is lacking in existing design-by-features approaches. Whether designing by features or by loops, new features - that are not intentionally created - get formed. These features often affect issues such as manufacturability, assemblability etc. These features are determined via a set of loop mappings (or feature mappings). Determination of these mappings and their completeness are studied in this research. A computer implementation of these mappings is performed and verified by industry experts.