Study on Dynamic Performance of Cutter Head and Cutter System of Rock Tunneling Set-up

2011 ◽  
Vol 143-144 ◽  
pp. 512-516 ◽  
Author(s):  
Kai Rong Hong ◽  
Hai Jun Zhao ◽  
Jia Dong Chang ◽  
Hai Xia Wang ◽  
Kui Chen ◽  
...  
Keyword(s):  
High Efficiency ◽  
Dynamic Performance ◽  
Tunnel Boring Machine ◽  
Element Model ◽  
Mode Analysis ◽  
Tunnel Boring ◽  
Low Energy Consumption ◽  
Free Mode ◽  
Set Up ◽  
Cutter Head

Several modals on Tunnel Boring Machine (TBM) in tunneling are introduced, the revolving rock tunneling simulator set-up is designed, the finite element model of cutter parts of the experimental bench is built, and free mode analysis of it is performed, and the model on system of cutter head, cutter and rock is established. It is shown that natural frequency on the cutter parts is higher, the frequency of first step is 4536Hz, and the most modes are deformations of the cutter loop, vibration acceleration of the cutter decreases with fracture tunnel width increasing, in some degree broken rock mechanics is achieved, foundation is provided for improving using life and adaptability of the cutter, and optimizing arrangement of plate cutter on the cutter head, and finally realizing high efficiency and low energy consumption.

A Nonlinear Multi-Objective Optimal Design for Cutter Head of TBM

2011 ◽  
Vol 80-81 ◽  
pp. 1046-1050
Author(s):  
Jun Cheng ◽  
Ya Dong Gong ◽  
Hai Feng Zhao ◽  
Yue Ming Liu ◽  
Jian Yu Yang
Keyword(s):  
Tunnel Boring Machine ◽  
Optimized Design ◽  
Intelligent Algorithm ◽  
Multi Objective ◽  
Tunnel Boring ◽  
Cutter Wear ◽  
Complex Constraints ◽  
Set Up ◽  
Cutter Head ◽  
Novel Model

This paper presents a novel model of lay out of cutter head of TBM(tunnel boring machine). Rock-broken mechanism during the operation of the cutter head is analyzed to study the layout of cutters. A model of the cutters under the action of forces during TBM’s working has therefore been developed, thus proposing a scheme to improve the rock breakability of TBM’s cutter head on which the cutters are lay out. Then, a nonlinear multi-objective mathematical model with complex constraints is developed, with an optimization program provided via an intelligent algorithm for the layout design of cutters on the cutter head of a TBM. The cutter head of an EPB6.28 TBM, an optimized design is given to set up a prototype with digitized cutter head, to which a simulation is done for the verification of equilibrium of forces. Comparing analytically the cutter wear and equilibrium of forces between a previous and a newly designed cutter heads, the results shows digitally that the new one is more practicable than the previous one.

Dynamic Analysis of Cutter Head System in Tunnel Boring Machine

2011 ◽  
Vol 186 ◽  
pp. 51-55
Author(s):  
Li Da Zhu ◽  
Peng Cheng Su ◽  
Gang Li ◽  
Wan Shan Wang
Keyword(s):  
Finite Element Method ◽  
Dynamic Analysis ◽  
Dynamic Optimization ◽  
Optimization Design ◽  
Tunnel Boring Machine ◽  
Mode Analysis ◽  
Tunnel Boring ◽  
Force Curves ◽  
Mode Vibration ◽  
Cutter Head

To obtain the reasonable layout and structure shapes of the various kinds of cutters in tunnel boring machine (TBM), the kinematic/dynamic of cutter head system was analyzed by using virtual prototype and finite element method (FEM). The velocity and force curves were got from different positions of cutters and the mode vibration of scrapers and cutter hobs were obtained to analyze their structural performances next stage. It is shown that these results can provide references for dynamic optimization design of tunnel boring machine. Therefore, it is necessary to implement kinematic/dynamic analysis and mode analysis before manufacture of production.

Virtual Prototype of the Tunnel Boring Machine and Movement Simulation in DIVISION Mockup2000i2

2009 ◽  
Author(s):  
Lun Li ◽  
Zhili Zhou ◽  
Jishun Li ◽  
Yujun Xue
Keyword(s):  
Virtual Reality ◽  
Tunnel Boring Machine ◽  
Virtual Prototype ◽  
Screw Conveyor ◽  
Product Introduction ◽  
Software Environment ◽  
Tunnel Boring ◽  
Physical Prototype ◽  
Set Up ◽  
Movement Simulation

The virtual reality is a multi-functional, interactive and immersible technology. As an advanced engineering design technology, the virtual reality technology (VRT) has been widely used in large mining machinery design and manufacturing. The system is based on DIVISION Mockup2000i2 software. Virtual prototype of the Tunnel Boring Machine (TBM) is studied in this paper. In addition, the movement simulation of TBM is completed in DIVISION Mockup2000i2. Firstly, CATIA software is adopted to build the parts of TBM. The TBM is assembled in CATIA too. Secondly, the THEOREM software is applied to convert the assembled model of TBM to another format which can be identified in DIVISION MOCKUP2000i2 software. In order to make the TBM image living, life-like and easy to browse, the light of surface, virtual materials and landmark scenes are set up in DIVISION MOCKUP2000i2 software environment. All motion parameters of the parts are defined before the simulation. Then, the virtual movement simulation of TBM components is analyzed with the behaviors property of MOCKUP. The virtual movement of cutting wheel, screw conveyor machinery and the door of mud out are studied. The virtual movement of segments and segment erector machine are completed by setting up virtual parts and virtual event. Five segments are fixed accurately in a cycle. The relations and interference of the parts movement are examined simultaneity. The hotkey is defined before the simulation, which can trigger the continuous implementation of virtual motion. In addition, a virtual voice is used to enhance the performance of movement simulation. The virtual prototype of TBM being set up and simulated will have positive significance for design inspection, structural analysis and product introduction without TBM physical prototype being manufactured.

Modeling and Simulation for Dual-Drive Transmission System of TBM Based on Bond Graph

2010 ◽  
Vol 44-47 ◽  
pp. 1703-1707
Author(s):  
Chao Lin ◽  
Xin Hong Su ◽  
Da Tong Qin ◽  
Song Song Yu
Keyword(s):  
High Power ◽  
Dynamic Performance ◽  
Graph Model ◽  
Tunnel Boring Machine ◽  
Bond Graph ◽  
Transmission System ◽  
State Equations ◽  
Response Curves ◽  
Tunnel Boring ◽  
Planetary Transmission

The dual-drive system to be used in the tunnel boring machine (TBM) is a new kind of high-power planetary transmission system. On the basis of the system’s transmission theory and the bond graph principle, the bond graph model of the dual drive transmission system is established and then the state equations are deduced. Based on this model, dynamic performance of the system is simulated by means of MATLAB/Simulink and the dynamic response curves of the speed and torques are acquired. The simulation response illustrates that the bond graph model of dual drive transmission systems is accurate. In addition this system is suitable for three types of TBM and can satisfy the requirements of dramatic changes of load in the running of TBM.

The Crushing Mode and the Optimal Penetration of Two Disc Cutters Cutting Marble under Different Confining Stress

2013 ◽  
Vol 353-356 ◽  
pp. 1417-1421 ◽  
Author(s):  
Bin Shen ◽  
Yi Min Xia ◽  
Jian Jian Gu ◽  
Yan Chao Tian
Keyword(s):  
Energy Consumption ◽  
Specific Energy ◽  
Specific Energy Consumption ◽  
Tunnel Boring Machine ◽  
Element Model ◽  
Confining Stress ◽  
Tunnel Boring ◽  
Disc Cutters ◽  
Full Face ◽  
Rock Tunnel

According to the actual working condition of the full face hard rock tunnel boring machine (TBM), a 2-D discrete element model for breaking marble by two TBM disc cutters is established, it simulates the whole progress of cracks production and propagation under different confining stress and penetration; based on CSM prediction model, forces of two cutters and specific energy consumptions are calculated to determine the best penetration. The simulating result shows that there are three kinds of breaking modes of marble under different confining stress and penetration; As well as the trend that specific energy consumption decrease first and then increase with the penetration increases, and there is optimal penetration to make specific energy consumption the lowest each confining stress. The optimal penetration and the lowest specific energy consumption are determined when confining stress range from 0 to 40MPa according to the simulation results.

Optimized Simulation Method and Experimental Verification on Dynamic Analysis of a Light Truck Frame

2009 ◽  
Author(s):  
Feng Gao ◽  
Yonghua Xiong ◽  
Lei Tian ◽  
Farong Du ◽  
Guoyan Xu
Keyword(s):  
Geometric Model ◽  
Dynamic Performance ◽  
Three Dimensional ◽  
Element Model ◽  
Simulation Method ◽  
Frame Structure ◽  
Light Truck ◽  
Combined Simulation ◽  
Set Up ◽  
Beam Frame

The three-dimensional geometric model of the fringe-beam frame had been built based on the frame structure of a light truck. In order to optimize the frame structure, the finite element model of the frame and the suspension system were set up. Considering the influence of suspension on frame dynamic performance, the modal properties of the frame model was analyzed in the commercial analysis program ANSYS, using two different methods. Based on the experiments, it was verified that combining MPC184 elements and spring elements Combin14 is a better way to simulate suspension compared to using spring finite elements only. Furthermore, the combined simulation results coincide with experimental modal analysis results, which were conducted thereafter. Subsequently, the frame stress-strain distribution rules and dynamics response were calculated under the random road spectrum excitation, and the frame dynamic parameters were obtained. This study provides some theoretical bases for frame structure improvement, and proposes an optimum method to simulate suspension. The results have direct significance in ensuring the stability, comfort and reliability of a light truck frame.

scholarly journals On the Loads for Strength Design of Cutterhead of Full Face Rock Tunnel Boring Machine

2019 ◽  
Vol 32 (1) ◽  
Author(s):  
Meidong Han ◽  
Zongxi Cai ◽  
Chuanyong Qu
Keyword(s):  
Three Dimensional ◽  
Influence Factors ◽  
Tunnel Boring Machine ◽  
Element Model ◽  
Rock Breaking ◽  
Strength Properties ◽  
Tunnel Boring ◽  
Strength Design ◽  
Full Face ◽  
Rock Tunnel

AbstractCutterhead loads are the key mechanical parameters for the strength design of the full face hard rock tunnel boring machine (TBM). Due to the brittle rock-breaking mechanism, the excavation loads acting on cutters fluctuate strongly and show some randomness. The conventional method that using combinations of some special static loads to perform the strength design of TBM cutterhead may lead to strength failure during working practice. In this paper, a three-dimensional finite element model for coupled Cutterhead–Rock is developed to determine the cutterhead loads. Then the distribution characteristics and the influence factors of cutterhead loads are analyzed based on the numerical results. It is found that, as time changes, the normal and tangential forces acting on cutters and the total torque acting on the cutterhead approximately distribute log normally, while the total thrusts acting on the cutterhead approximately show a normal distribution. Furthermore, the statistical average values of cutterhead loads are proportional to the uniaxial compressive strength (UCS) of cutting rocks. The values also change with the penetration and the diameter of cutterhead following a power function. Based on these findings, we propose a three-parameter model for the mean of cutterhead loads and a method of generating the random cutter forces. Then the strength properties of a typical cutterhead are analyzed in detail using loads generated by the new method. The optimized cutterhead has been successfully applied in engineering. The method in this paper may provide a useful reference for the strength design of TBM cutterhead.

A Method to Predict Disc Cutter Specific Energy for TBM Based on CSM Model

2012 ◽  
Vol 236-237 ◽  
pp. 414-417
Author(s):  
Gang Li ◽  
Li Da Zhu ◽  
Jian Yu Yang ◽  
Wan Shan Wang
Keyword(s):  
Specific Energy ◽  
Performance Prediction ◽  
Dynamic Models ◽  
Tunnel Boring Machine ◽  
Disc Cutter ◽  
Energy Prediction ◽  
Tunnel Boring ◽  
Csm Model ◽  
Tbm Cutter ◽  
Cutter Head

By using fracture mechanics theory of rock, the rock fragmentation mechanism of tunnel boring machine (TBM) cutters is analyzed and the analysis of forces of cutter is carried out. A new method to predict disc cutter specific energy for TBM is developed in this study. By using the dynamic models of TBM cutters interaction with the rock, specific energy prediction model for TBM cutter head is developed. The data from the actual tunnel construction is analyzed by using an example of Qinling tunnel and the comparison is made with the field data. The results indicate that the model developed in this study could not only replace the experiment to disc cutter specific energy for TBM, but also provide a theoretical basis for the performance prediction and optimal design of cutter head for TBM.

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