Modeling of generalized dynamic constraints network based on simulation and expand approximate method (EAM)

This research work aims to develop a GDCN (generalized dynamic constraint network) that enables designers to consider at the early stages of the design process all activities associated with product´s life cycle. This research article discusses the development of effective modeling method for domain level constraints using a combination of both numerical simulation and approximate techniques. Firstly, the definition and mathematical model of GDCN are given. Secondly, the expand approximate method (EAM) is introduced, in which numerical simulation and adapting response surface methodology (ARSM) are integrated. Thirdly, the effective modeling method of domain level constraints is constructed through abstracting relations between the input and the output (domain performance index) from the simulation data based on EAM. Finally, the design of crank and connecting rod in the V6 engine as example is given to show the validity of the modeling method.