Cross-Generational Variation Analysis to Identify Circularity Potentials based on the Model of SGE –System Generation Engineering

Circular product engineering is regarded as a key lever to decouple economic growth from resource consumption while preserving competitiveness. However, the transition from linear to circular product engineering of mechatronic systems requires balancing two seemingly opposing goals: Closing industrial material cycles while simultaneously maintaining high innovation potential across system generations. Existing development approaches scarcely reveal how variations across system generations affect circularity potential. This paper introduces an extended description model based on the model of SGE –System Generation Engineering that formalizes the variation between system generations of mechatronic systems. This work builds on the model of SGE and extends its variation operators with characterizing core factors. The description model provides a methodological foundation for systematically describing and analyzing cross-generational variations and aims to support prospective planning of circular development and value-retention paths. For practical grounding, three angle-grinder generations were systematically dismantled and analyzed. The case study demonstrates the applicability of the model and highlights its value for identifying circularity-relevant variation patterns. ... mehrThe work establishes a methodological basis for the analysis and prospective planning of circular development and value-retention paths within strategic product development.