RIA: Simultaneous Modeling of Features and Design Interdependencies to Support Computer-Integrated Engineeringvia Object-Oriented Software Engineering

该项目表明，特征和设计相互依赖的同时建模对于支持计算机集成工程(CIE)所需的关键软件通信至关重要。必须保持相互依赖的特征之间的一致性，以便对一个特征的更改反映在所有适当的依赖特征中。例如，设计特征和制造特征可以是相互依赖的，其中设计改变可能需要改变相关联的数控(NC)程序。因此，最重要的要求是开发具有代表性的相互依赖的特征库。遗憾的是，目前的计算机辅助设计(CAD)系统强调详细设计的输入--原始设计意图中的相互依赖关系不能很容易地表达出来，即使它们通常被设计者很好地理解。现代并行工程将设计、制造、组装、维护和演化视为协作活动；这意味着在CIE活动的任何阶段都应该允许表示相互依赖关系。由内部软件工程研究团队进行并行开发的面向对象软件设计工具的使用，提供了捕获这些相互依赖关系并有效地传播产品和过程更改的机会。在一个复杂的CIE领域内的面向对象数据库上，以新兴的工业喷气发动机机壳设计为测试案例，验证了该方法的有效性。

This project demonstrates that the simultaneous modeling of features and design interdependencies is essential for the critical software communications necessary to support computer-integrated engineering (CIE). Consistency between interdependent features must be preserved, so that a change to one feature is reflected in all appropriate dependent features. For example, a design feature and a manufacturing feature may be interdependent, where a design change may necessitate change in the associated numerical control (NC) program. Hence, an a fortiori requirement is the development of a representative library of interdependent features. Unfortunately, current computer aided design (CAD) systems emphasize the input of detailed design-interdependencies within the original design intent can not be easily expressed, even though they are often well understood by the designer. Modern concurrent engineering envisions design, manufacturing, assembly, maintenance, and evolution as co-operative activities; implying that the representation of interdependencies should be permissible within any stage of CIE activity. The use of object-oriented software design tools, undergoing parallel development by an internal software engineering research team, provide opportunities to capture these interdependencies and efficiently propagate product and process changes. The effectiveness of this approach is demonstrated over and object- oriented database within a complex CIE domain, using emerging industrial jet engine casing designs as test cases.