Study of TBM cutterhead fatigue crack propagation life based on multi-degree of freedom coupling system dynamics

Ling, Jingxiu; Sun, Wei; Huo, Junzhou; Guo, Li

doi:10.1016/j.cie.2015.01.026

Cited by 36 publications

(17 citation statements)

References 22 publications

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“…According to the theoretical models, Zhang et al [16,17] analyzed the total load in an EPB TBM tunneling process and established a predictive model for the total load, which reflected the influence of the geological, operating, and structural parameters. Sun et al [18,19] and Li et al [20] established a coupling nonlinear dynamic model of a cutterhead system to analyze the dynamic characteristics of the cutterhead. Huo et al [21,22] established multi-degreeof-freedom coupling dynamic models for the disc cutter and cutter system and revealed the dynamic characteristics of the disc cutter and cutter system.…”

Section: Introductionmentioning

confidence: 99%

Dynamic Characteristics Analysis with Multi-Directional Coupling in a TBM Mainframe

Lin

Xia

et al. 2019

Chin. J. Mech. Eng.

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The cutterhead of a full-face rock tunnel boring machine (TBM) is constantly subjected to varying impact and dynamic loads during tunneling processes, resulting in relatively large vibrations that could easily lead to fatigue cracking of the entire machine and affect the tunneling performance and efficiency. To explore the dynamic characteristics of the TBM mainframe, a TBM from a water-diversion project is investigated in this research. According to the TBM vibration transmission route, an equivalent dynamic model of the TBM mainframe is established using the lumped-mass method in which the relevant dynamic parameters are solved. Additionally, the dynamic response characteristics of the TBM mainframe are analyzed. The results indicate that the vibration levels in three directions are approximately the same, the multi-directional vibration of the cutterhead is more intense than that of other components, and the vibration and external excitation exhibit identical change trends. A set of vibration field tests is performed to analyze the in situ dynamic responses of the mainframe and verify the correctness of the dynamic model. The theoretical and measured acceleration values of the TBM mainframe have the same magnitude, which proves the validity of the dynamic model and its solution. The aforementioned results provide an important theoretical value and practical significance for the design and assessment of the TBM mainframe.

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Section: Introductionmentioning

confidence: 99%

Dynamic Characteristics Analysis with Multi-Directional Coupling in a TBM Mainframe

Lin

Xia

et al. 2019

Chin. J. Mech. Eng.

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“…To achieve stability of cutterhead driving, angular velocity control is of crucial importance [7]. Induction motors are difficult to control and not suitable for high dynamic performance applications because of their complex nonlinear dynamics [8]. Vector control provides decoupled control of the flux magnitude and the torque producing current, which is commonly used in asynchronous motor [9].…”

Section: Introductionmentioning

confidence: 99%

Sequential and Iterative Distributed Model Predictive Control of Multi-Motor Driving Cutterhead System for TBM

et al. 2019

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In this paper, we investigate the robust control of multi-motor driving cutterhead system for tunnel boring machines (TBMs) with distributed model predictive control (MPC). By analyzing the working procedures of the induction motor, coupling, reduction gear box, and spur gear, a dynamical model of cutterhead system is established. The model is then represented into a state-space model with additional loads. A sequential and iterative distributed MPC algorithm is established for optimizing the input torques for the driving motors. To design the distributed MPC, the whole system is decomposed into several subsystems according to the distribution of input torques. The future system outputs are predicted by using the system model and the distributed MPC optimizes the input sequence at each time instant in a recursive fashion. The model errors are corrected by comparing the actual outputs and predicted outputs. A sequential and iterative algorithm is proposed to coordinate the distributed MPC controllers. Finally, simulations are carried out to validate the distributed MPC algorithm on torque optimization of cutterhead system in TBMs.INDEX TERMS Tunnel boring machine, cutterhead system, distributed MPC, iterative.

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“…The boring process is accompanied by huge torque, thrust, and large impact load from mixed rock masses, sticky soil, and high groundwater pressure. Such unbalanced loads lead to serious vibration of the TBM cutter head and the segment erector (e.g., Ling et al 2015;Huo et al 2017).…”

Section: Introductionmentioning

confidence: 99%

Development and simulation of magnetorheological damper for segment erector vibration control

Yang

Zhang

Bai

et al. 2019

Transactions of the Canadian Society for Mechanical Engineering

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In this paper, magnetorheological dampers are applied to a segment erector to replace passive vibration dampers. Because magnetorheological damper dynamics are highly nonlinear, design of a direct control system is impossible. To apply linear control theory directly to design the magnetorheological damper controller, the Takagi–Sugeno fuzzy model analytically represents the segment erector model. In addition, a disturbance observer based on a Takagi–Sugeno fuzzy controller is proposed for this system. Both simulations and experiments validate the performance enhancement and stability of the controller. The results show that the acceleration of the segment erector was reduced by 59.6% and 32.1% in oblique wave excitation and random excitation, respectively, compared to a conventional passive damper. The proposed fuzzy controller and magnetorheological dampers have great potential in practical applications because they can significantly improve the performance of a segment erector.

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Study of TBM cutterhead fatigue crack propagation life based on multi-degree of freedom coupling system dynamics

Cited by 36 publications

References 22 publications

Dynamic Characteristics Analysis with Multi-Directional Coupling in a TBM Mainframe

Dynamic Characteristics Analysis with Multi-Directional Coupling in a TBM Mainframe

Sequential and Iterative Distributed Model Predictive Control of Multi-Motor Driving Cutterhead System for TBM

Development and simulation of magnetorheological damper for segment erector vibration control

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