RPS Research into Design — Supporting Sustainable Product Development “icord2011-lineup ” 2010/12/24 87 ON THE INTERACTION BETWEEN THE ENGINEERING DESIGN AND THE DEVELOPMENT PROCESS MODELS — PART I: ELABORATIONS ON THE GENERALLY ACCEPTED PROCESS MODELS

Models of the engineering design process and of the development process nowadays present similar forms in the engineering design literature and interact in a similar way. Thesemodels are often presented as generic, in order to be used in awide area of applications. This interaction is, however, not unproblematic, and in this publication we present some important issues and challenge the generic aspect of these models. In order to increase clarity we have divided the publication into two parts. In Part I, the generally accepted engineering design and development process models are presented. The fundaments of the development model and the motivations behind its current form are highlighted. In Part II, the consequences in the form of severe shortcomings resulting from the interaction of the engineering design and development process models are highlighted. These shortcomings do not disappear when the systematic design process model is applied with alternative development process models. The implications for the further development of methodologies supporting the design and development models are discussed