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

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

doi:10.3973/j.issn.2096-4498.2020.06.008

Tunnel Construction >

2020 , Vol. 40 >Issue 6: 833 - 839

DOI: https://doi.org/10.3973/j.issn.2096-4498.2020.06.008

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

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

Online 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。

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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 disccutter during rock breaking process. Firstly, based on the analysis of the load of the edge disccutter in the rock breaking process, the loads are simplified as vertical force, axial force and overturning moment to establish an edge disccutter dynamic model. And then the dynamic simulation model of edge disccutter is established by using MATLAB/Simulink; the load history of the cutter obtained by ANSYS/Lsdyna is used as the input stimulus of the dynamic model, thus the vibration displacement response curve of each part of the edge disccutter 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 disccutter 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

Cite this article

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

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

[J]. Tunnel Construction, 2020 , 40(6) : 833 -839 . DOI: 10.3973/j.issn.2096-4498.2020.06.008

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