LIU Honglei, SONG Chenxu, LU Rui, et al. Structural Variation and Reconstruction Design of Tunnel Boring Machine Cutterhead from the View of Energy[J]. 2023, 57(9): 109-122.
DOI:
LIU Honglei, SONG Chenxu, LU Rui, et al. Structural Variation and Reconstruction Design of Tunnel Boring Machine Cutterhead from the View of Energy[J]. 2023, 57(9): 109-122.DOI: 10.7652/xjtuxb202309012.
Structural Variation and Reconstruction Design of Tunnel Boring Machine Cutterhead from the View of Energy
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 achieve 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 are 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.
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