Design Change Propagation of CAD Sequential Design in Collaboration
Date Issued
2009
Date
2009
Author(s)
Chao, Su-Nung
Abstract
Recently, some products have been concentrated on developing distributed CAD systems with collaborative methodologies. Collaboration could provide discussion and co-design between the two upstream industrial design and downstream mechanical design teams. The sequential design starts from industrial design using neutral file as exchange format. When the design change occurs during the process, the following mechanical design can’t access the design contents. According to the problem about design propagation, three steps are proposed in this research. irst of all, this research proposes flexible collaboration architecture, separating the CAD structures into some layers, and make CAD system easier to change its working style from standalone to any other collaborative edition. Second, CAD and PDM system can integrate to from a web platform using the flexible architecture. It is unnecessary to install the CAD system, and users can manipulate models directly, which can solve the problem when design stage is across two different sites. Final, take the recording data passed in the flexible architecture as design steps, and by reserving these data, the design procedures can be recorded and replayed in real-time or afterward. As a result, the synchronous collaboration and asynchronous collaboration can be achieved. System will compare the later input neutral file with the former one by using “similarity comparison” of 3D model, and modify the design stages on former neutral file and apply them into the later neutral file. Thus, the design change can propagate in the mechanical design if it happens in the industrial design.
Subjects
sequential design
design change
flexible collaboration architecture
similarity comparison
Type
thesis
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