Paper Title:
The Numerical Simulations of Forces Acting on TBM Disc Cutters with the Consideration of Confining Pressure and Damage in Rocks
  Abstract

This paper gives a brief explanation of the failure mechanism of rock fragmentation in rock cutting. The JOHNSON_HOLMGIST_CONCRETE is selected as the rock material model in numerical simulation with confining pressure and damage influence introduced. We use the non-linear dynamic finite element software LS/DYNA to simulate the dynamic process of cutting rock. The cutting forces acting on disc cutter are computed. The relationship between cutting forces and penetration depth, confining pressure and damage parameters are obtained. The results show that, the cutting forces increase with the penetration depth. They are larger in equal confining pressure than unequal condition. The forces are amplified with the damage parameters increasing. The conclusion provides a reference for the prediction of the cutting forces.

  Info
Periodical
Chapter
Chapter 5: Road and Bridge Engineering
Edited by
Paul P. Lin and Chunliang Zhang
Pages
1170-1174
DOI
10.4028/www.scientific.net/AMM.105-107.1170
Citation
H. Y. Li, G. Y. Shi, "The Numerical Simulations of Forces Acting on TBM Disc Cutters with the Consideration of Confining Pressure and Damage in Rocks", Applied Mechanics and Materials, Vols. 105-107, pp. 1170-1174, 2012
Online since
September 2011
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