ISSN 2096-4498

   CN 44-1745/U

二维码

Tunnel Construction ›› 2020, Vol. 40 ›› Issue (6): 833-839.DOI: 10.3973/j.issn.2096-4498.2020.06.008

Previous Articles     Next Articles

Dynamic Model and Vibration Analysis of TBM Edge Disccutter Based on MATLAB/Simulink

ZHANG Binrong, GUAN Huisheng, TAN Xiaofeng, LIAO Jiang, YANG Xiao, LI Xia   

  1. (College of Mechanical Engineering, Southwest Jiaotong University, Chengdu 610031, Sichuan, China)

  • Online:2020-06-20 Published:2020-06-29
  • Supported by:
    张斌荣(1996—),男,陕西汉中人,西南交通大学机械工程专业在读硕士,研究方向为盾构与TBM设计及理论。E-mail: 2597027552@qq.com

Abstract: Serious failure often occurs to the single blade edge disccutter when TBM boring in hard rock stratum. Hence, it is necessary to study the vibration characteristics of the edge disccutter during rock breaking process. Firstly, based on the analysis of the load of the edge disccutter in the rock breaking process, the loads are simplified as vertical force, axial force and overturning moment to establish an edge disccutter dynamic model. And then the dynamic simulation model of edge disccutter is established by using MATLAB/Simulink; the load history of the cutter obtained by ANSYS/Lsdyna is used as the input stimulus of the dynamic model, thus the vibration displacement response curve of each part of the edge disccutter is obtained. Finally, the effect of the stiffness on the cutter vibration is studied by changing the size of the various components in the model. The results show that: (1) When the edge disccutter with an angle of 45° is installed to break the rock in the granite stratum, the lateral vibration amplitude of the cutter ring is about 22% larger than the vertical vibration amplitude, and the maximum lateral swing angle can reach 0.406°. (2) The stiffnesses of cutter ring and bearing are the important factors that affect the lateral vibration and swing of cutter; if the stiffness of the cutter ring is doubled, the vertical, lateral and swing amplitudes of the cutter can be reduced by 26.6%, 31.5%, 31.0%, respectively; if the bearing stiffness is doubled, the vertical, lateral and swing amplitudes of cutter can be reduced by 19.5%, 14.1%, 21.7%, respectively. 

Key words: TBM, edge disc , cutter, dynamic model, vibration, stiffness, MATLAB/Simulink, ANSYS/Ls , dyna

CLC Number: