Results 261 to 270 of about 27,701 (306)
Some of the next articles are maybe not open access.
Engineering Failure Analysis, 2021
Abstract Disc cutters are used to cut the rocks in variable load conditions which results in cutter wear and failure. The wear of the cutter plays a vital role in the overall time cycle, efficiency and economics of tunneling projects. It changes the shape of the cutter, influences the cutting efficiency and has a detrimental effect on the annual cost
Anil Kumar Agrawal +2 more
openaire +1 more source
Abstract Disc cutters are used to cut the rocks in variable load conditions which results in cutter wear and failure. The wear of the cutter plays a vital role in the overall time cycle, efficiency and economics of tunneling projects. It changes the shape of the cutter, influences the cutting efficiency and has a detrimental effect on the annual cost
Anil Kumar Agrawal +2 more
openaire +1 more source
TBM Disc Cutter Model Based on Admissible Energy Principles
Transactions of Tianjin University, 2017Disc cutters are the most critical tool for excavation by tunnel boring machine (TBM). Based on the energy conservation law, finite-element modeling, and elastic–plastic continuum theory for tunneling by TBM, the interaction between disc cutters and rock mass was examined.
Dianhua Zhu, Wei Guo, Liwei Song
openaire +1 more source
Multi-edge disc cutters wear and damage evaluation
2023The term "cutter wear" refers to a reduction in radial length. The fragmentation of rocks by disc cutters per revolution might result in the intermittently repeated wear of a given place on the cutter tip. Thus, the wear capacity of disc cutters can be determined by measuring the wear of a point on the cutter tip when crushing rocks, known as the ...
openaire +1 more source
A practical TBM cutter wear prediction model for disc cutter life and rock wear ability
Tunnelling and Underground Space Technology, 2019Abstract Tunnel Boring Machine (TBM) is an effective machine for building hard-rock tunnel. However, the interaction between the cutter of TBM and rock is the key factor before engineering construction, which will cause a lot of unnecessary losses and trouble in the construction process. The reason is that the disc cutter, the core tool of TBM broken
Zhenchuan Sun +9 more
openaire +1 more source
Improvement of Disc Cutter Performance by Water Jet Assistance
Rock Mechanics and Rock Engineering, 2013This article deals with the problem of assisting disc cutters by means of high-velocity jets of water, with the aim of increasing the excavation rate while improving the working conditions, with particular reference to wear. The results of an experimental research undertaken at the Waterjet Laboratory of the University of Cagliari on a medium–hard ...
Ciccu R, GROSSO, BATTISTA
openaire +2 more sources
Analysis of thermal stress distribution of TBM disc cutter
Australian Journal of Mechanical Engineering, 2018ABSTRACTThe disc cutter is used in the excavation of hard rock as one of the driving parts, so it is necessary to study the variation and distribution of thermal stress caused by contact friction with rock during the excavation. In this paper, the numerical simulation analysis of the rock breaking process of the disc cutter was carried out by using the
Zhang Guiju, Xiao Caiyuan
openaire +1 more source
ANSYS-Based Finite Element Analysis on TBM Disc Cutter
Advanced Materials Research, 2014The purpose of the essay is to know the rock fragmentation mechanism of TBM and improve the efficiency of disc cutter. The method of simulation is applied. The cutter ring and cutter axis surface stress distribution are studied under different rocks and the change of them is analyzed under different penetrations.
Ke Zhang +4 more
openaire +1 more source
Microfracture beneath blunt disc cutters in rock
International Journal of Rock Mechanics and Mining Sciences & Geomechanics Abstracts, 1988Howarth D.F., Bridge E.J.
openaire +2 more sources
Géotechnique Letters
Disc cutters are the most commonly used cutting tools in various types of tunnel boring machines (TBMs). Estimating the force required for cutting a specific type of rock using disc cutters is a crucial aspect of the TBM cutter head design and the prediction of TBM performance.
M. Palassi, M. Koohmishi, M. Jangi
openaire +1 more source
Disc cutters are the most commonly used cutting tools in various types of tunnel boring machines (TBMs). Estimating the force required for cutting a specific type of rock using disc cutters is a crucial aspect of the TBM cutter head design and the prediction of TBM performance.
M. Palassi, M. Koohmishi, M. Jangi
openaire +1 more source