Dynamic Performance and Structural Integrity Monitoring of Bogie Based on Digital Twin Technology

A frame structure of bogie digital twin construction is proposed, which can realize the real-time dynamic display and feedback design of key technical indexes of dynamics and structural strength. The four key technologies and technical routes of bogie twin modeling are described. The simulation methods and detailed steps of bogie dynamics twin model and structural strength twin model are given. Some simulation test design schemes are compared and analyzed and an optimal proposal scheme is proposed. A technical route of agent model based on deep learning neural network is proposed, and the effectiveness and accuracy of the model are verified by the cases of wheel rail force prediction and wheel-set stress prediction. The results of this study can be used to guide the development of the core module of digital twin engineering application of bogie and deploy it on the ground center.