Developing a parameter linkage-based method for searching change propagation paths

Changes are unavoidable during the product evolution process, and the propagation of changes leads to an augmentation of the design complexity. The acquisition of an optimal change solution provides a significant challenge for designers due to the non-uniqueness of change propagation paths. This paper aims to develop a method to search for change propagation paths. A product model from the parameter linkage perspective is constructed, through which the propagation mechanism of changes is analyzed. Then, a searching method is proposed based on the product model and change propagation mechanism. It is found that the parameter linkages in designs can be organized in a structured manner with two types of parameter linkages, and the change propagation is an alternate process of influence diffusion and change routing. A case study presented in this paper indicates that this method can provide support for the searching and optimal selection of change propagation paths.