ENGINEERING DESIGN PROBLEM IN A CO-EVOLUTIONARY MODEL OF THE DESIGN PROCESS
While traditional stage-based models of the design process assume it starts with a design problem definition that prescribes downstream activities, another approach has been emerging, that considers co-evolution of both the problem and solution representations. This paper proposes a so-called co-evolutionary model of the design process based on four activities. A design corpus is used to illustrate the content of this contribution and to validate the relevance of the co-evolutionary paradigm. This model is eventually questioned to support the use of design tools in better accordance with the issues exposed, i.e. dynamic and cognitive aspects of the design process, together with the nature of design problem.