A novel intelligent assembly-adjustment method for aero-engine rotor system aimed at improving interface load-bearing performance

Abstract

For aero-engine rotor system, the interface load-bearing performance is crucial for its connection stability. In order to effectively ensure the connection performance of aero-engine in strong service environments, this paper proposed an intelligent assembly-adjustment method that integrates key feature measurement, performance prediction and process feedback. Taking the typical multi-bolts connection structure in aero-engine rotor system as the research object, firstly, by using the intelligent fastener, the precise acquisition of preload distribution after assembly process has been achieved. Then, for the issue of interface load-bearing performance weakening represented by non-uniform slip behavior, a $\mathrm{CON}$-$∆e$ agent model was constructed for predicting the non-uniformity of interface slip. Finally, based on $\mathrm{CON}$ reduction principle, a local preload feedback-adjustment method for improving the interface load-bearing performance has been proposed. Through a simulated rotor assembly case, the effectiveness of the proposed intelligent assembly-adjustment method in improving interface load-bearing performance was demonstrated. Overall, the research content has a better application prospect in connection stability improvement of mechanical system.