能量视角下的盾构机刀盘的结构变异重构设计

In order to fully explore the optimized load-bearing structure of the tunnel boring machine cutterhead, the variation and reconstruction mechanism for the dynamic load-bearing structure based on the classical layout scheme was further researched. Specifically, the explicit topology optimization method was used as a design tool to drive the variation and reconstruction of the load-bearing structure of the tunnel boring machine cutterhead and the EFEM was also used to a-chieve the suppression of the structural dynamic response by guiding and enhancing the dissipation of the vibration energy of the tunnel boring machine cutterhead. In this paper, the cutterhead structure of a certain type of the EPB tunnel boring machine was verified. The verification results show that under the same opening rate and load input conditions, compared with the original cutterhead structure, the average deformation of the cutterhead structure designed in the paper is reduced by 24. 49%, the maximum stress is reduced by 41. 34%, and the statics performance is improved; compared with the original cutterhead structure, the energy flexibility of the optimized cutterhead structure is improved by more than 22. 0%, the maximum dynamic response and the minimum dynamic response arc reduced by 7. 8% and 27. 7% respectively, and the dynamic performance is effectively improved. Therefore, the structural variation and reconstruction design method from the view of energy proposed in this paper has great engineering application value and also provides a new idea for the dynamics design of large-size structures represented by tunnel boring machines.