Every carmaker wants to optimize its Body process chain to dramatically reduce thetime between 'Styling Freeze' and 'SOP' (Start of Production). In order to reach thisobjective, the overall design process needs to be reengineered to allow simultaneousengineering, fast design change, and seamless processes from the early-styling ideastage right through to manufacturing definition.The BiW process has been transformed over the past years through different practices,from the drawing board, to 2D CAD*, to 3D CAD, and then to Digital Mock-up(DMU). Despite the progress, most of the CAD models include very little productKnowledge and hence cannot be reused from one car program to the next.Dassault Systèmes PLM technology and Practices, on the other hand, enable carmanufacturers to reuse existing design data and achieve their objective ofsignificantly reducing development cycle time. These Practices include:(1) 'Advanced Part Design'The technology behind these new BiW practices, called 'Specification DrivenModeling', was created in the 90s. It involves capturing the surface history andrequires BiW designers to become CAD experts responsible for creating reusable'templates' for other car programs.As of today, several car manufacturers have already achieved 'advanced part design'with CATIA? V5 on BiW production components with benefits up to 80% for atypical exterior styling surfaces change.(2) 'Relational Design'A car body consists of approximately 350 components that are mainly driven eitherby exterior surfaces or packaging/ergonomics constraints. Styling changes can havemajor repercussions that need to be analyzed and performed very quickly. Thisdistribution and synchronization of work is possible only by using technological linksbetween all these models (Styling, Packaging, BiW components, etc.). ENOVIA?products, used at several car manufacturers, manage the lifecycle of these componentsand the change process to make Relational Design a reality. Expected benefits of thispractice is a 45% reduction of the total BiW design cost on a given car platform.(3) 'System Design'
展开▼
