Unification of multiple models for complex system development

In the design of automotive product, the constant evolution of customer requirements and international regulations leads to new considerations of the sys-tem design process. The authors propose a modeling approach for complex system design based on the coupling of collaborative models and heterogeneous experts’ (i.e. authoring) models used for product behavior assessment. The approach aims at modeling a system at different systemic and temporal levels in the design pro-cess and allows a flexible navigation with the possibility of changing or adding models in the design space. The purpose behind the use of this approach is to lead to an optimal design solution in the context of innovative design for complex sys-tem