Abstract
Considering that the traditional finite element method takes a long time to calculate and can not meet the real-time stress analysis of complex equipment such as anchor-digging machine, this paper takes the cutting mechanism of anchor-digging machine as the research object. in this paper, a fast analysis method of mechanical characteristics based on digital twinning is proposed, and this method is combined with digital twinning technology. In this paper, a digital twin model is established, which can be used to analyze the real-time mechanical characteristics of the cutting arm of the excavating and anchoring machine. Firstly, based on dimensional analysis and similarity principle, the simulation model of cutting mechanism test-bed of anchor-digging machine is established, and the model is used in finite element simulation and digital twin model. Secondly, the finite element analysis of the cutting arm of the integrated digging and anchoring machine is carried out, and the finite element calculation results are evaluated. Then, a fast analysis method of mechanical characteristics of cutting mechanism of anchor-digging integrated machine based on agent model is put forward, and an agent model for mechanical characteristic analysis of anchor-digging integrated machine is established. After verifying the fitting accuracy of the surrogate model, the established surrogate model is applied to analyze the mechanical characteristics of the cutting arm of the integrated digging and anchoring machine, and the necessary evaluation of the analysis results is made. Finally, the agent model of rapid analysis of mechanical characteristics is applied to the digital twin model, and the digital twin monitoring platform of cutting mechanism of anchor-digging machine is built in Unity, which realizes the real-time mechanical characteristic analysis, real-time residual life analysis and health monitoring of the cutting mechanism of anchor-digging machine.