Considering that conventional experiment methods are time-consuming, laborious and expensive, on the premise of understanding the rock fragmentation mechanism of disc cutter cutting and laser drilling respectively, a novel simulation modeling method of rock breaking of tunnel boring machines (TBM) disc cutters assisted with the laser is proposed. The method includes two-step modeling features: 1) in the first step, a finite element model of laser drilling is established in ANSYS, and then the morphology of a single hole and fissures can be predicted using the birth and death element method; 2) in the second step, a rock finite element model with multiple holes is reconstructed in HyperMesh, where the holes with a given hole spacing n have the same shape as the first step; then, ANSYS/LS-DYNA is used to carry out the simulation analysis, thereby indirectly simulating rock breaking process of TBM cutters assisted with laser. Finally, to demonstrate the applicability of the method, a simulation case study is carried out and the obtained values such as cutting force, the amount of rock breaking, and specific energy consumption are according with theoretical expectations. It can be seen that this paper provides an economical and feasible solution for the study of laser-assisted rock breaking.


    Access

    Check access

    Check availability in my library

    Order at Subito €


    Export, share and cite



    Title :

    Investigation on Two-Step Simulation Modeling Method for Rock Breaking by TBM Disc Cutters Assisted with Laser


    Additional title:

    KSCE J Civ Eng


    Contributors:
    Zhang, Kui (author) / Liu, Wangwang (author) / Yao, Xuming (author) / Peng, Cicai (author) / Liu, Jie (author) / Zheng, Xuejun (author)

    Published in:

    Publication date :

    2022-06-01


    Size :

    13 pages




    Type of media :

    Article (Journal)


    Type of material :

    Electronic Resource


    Language :

    English




    Theoretical Research and Simulation Analysis on the Cutter Spacing of Double Disc Cutters Breaking Rock

    Zhou, Peng / Guo, Jingjing / Sun, Jian et al. | Online Contents | 2019


    Theoretical Research and Simulation Analysis on the Cutter Spacing of Double Disc Cutters Breaking Rock

    Zhou, Peng / Guo, Jingjing / Sun, Jian et al. | Springer Verlag | 2019


    Two new ice-breaking harbor cutters

    Engineering Index Backfile | 1939


    Two new ice-breaking harbor cutters

    Engineering Index Backfile | 1939


    Two new ice-breaking harbor cutters

    Engineering Index Backfile | 1939