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1 LSIS - Laboratoire des Sciences de l-Information et des Systèmes 2 ETS - Ecole de Technologie Supérieure

Abstract : Current Computer-Aided Design CAD packages support the storage of the final design models and solutions in different formats, and PLM software manages the high-level information about the design process, such as the versioning of the design solutions. However, the processes happening inside the CAD software are not being fully captured. Information such as the sequence of actions create a sketch, set a distance constraint, remove a pocket, modify the diameter of a through hole, etc., versioning of the created objects, etc. is missing. This information can be used to understand how a designer uses CAD software to generate geometric representations. In design companies, capturing this information during a product design project would help to evaluate the designer’s way of working with CAD software. In design education, collecting information on how design students generate geometric representations would allow teachers to identify the areas of misunderstanding, improve the education process by representing the optimal way of working, and help teachers to correctly evaluate their students’ performance in using CAD software. This paper proposes a framework to support an analysis of how designers use CAD software to generate geometric representations. This framework consists of structured models and an approach which guides the actor in capturing the design process. We use CATIA as a CAD software solution, but the proposed approach is generic and can be extended to any CAD software. The validity of the proposed approach is illustrated through a case study.

Keywords : Solid modeling Modeling process Design process CAD Modeling Metrics Performance

Autor: Samira Sadeghi - Thomas Dargon - Louis Rivest - Jean-Philippe Pernot -



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