In the New Product Development processes, there are usually multiple players interacting through coupled design activities with conflicting design objectives. We use Set-based design approach and Constraint Satisfaction Problem solving techniques to deal with the multiplayer, multi-objective design problem. In order to observe the states of the players during the design process, we develop satisfaction and progress indicators and combine them into a wellbeing indicator. In this paper we simulate different player behaviors on a two-player, multi-objective engineering design problem of a hollow cylindrical cantilever beam. During the simulation cases, at each simulation iteration automatic players are prioritized regarding their wellbeing states for proposing constraints in order to find a set of consistent solutions that improve their satisfaction states. Therefore during the simulation process, while solution space converges to a single solution, epistemic uncertainty is reduced and players’ satisfaction states are improved in wellbeing equilibrium.

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