Abstract
To consider the life cycle options for each part of a product at the early phase of design leads to significant reductions in the environmental loads for the whole product life cycle. We propose a life cycle design system based on 3D-CAD and a preference set-based design to support to define the life cycle options and to obtain multi-objective design solution sets design ideas which satisfy not only environmental requirements but also performance requirements. The present study applies the proposed system to a multi-objective problem for environmental and performance requirements as an example problem, that is, a cleaner model created by 3D-CAD.
