Numerical Simulation of Rock-Breaking Process by Disc Cutter in Tunnel Boring Machine

Abstract:

The force load research of disc cutter can be used in the design of disc cutter, in order to improve the working life, determine when to change another cutter. Based on the working platform of ABAQUS finite element analysis module, single disc cutter rock-breaking of the simulation model is established, and according to the theory of rocks plastic rule, dynamics analysis and dynamic simulation are done when the cutter is in rock-breaking process by which, the added force can be got when the disc cutter and rocks contact each other in different wear conditions of contact force in the process of the dynamic contact each other. The results show that with the cutter damage increasing, the added force is increased and cutters maximum instantaneous stress load is 1.5 ~ 2.5 times than the average stress load, which has a negative influence on working efficiency. To have a clear understand of cutters design and working life and when to change another cutter in working time, the results also offer an engineering parameters for researching the load state of TBM tunneling.

• Periodical: Applied Mechanics and Materials (Volume 487)
• Pages: 513-516
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.487.513
• Online since: January 2014
• Authors: Yu Zhang, Xing Wen Wang*, Hui Fang Liu
• Keywords: ABAQUS, Rock-Breaking, TBM Disc Cutter

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