A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Estimating the Peak Indentation Force of the Edge Chipping of Rocks Using Single Point-Attack Pick
Abstract This article establishes a new model for estimating the peak indentation force of the edge chipping of rocks when using a conical or a pyramidal point-attack pick. The investigation points out that the existing formulation in the literature is based on an inappropriate stress assumption and equilibrium, and hence leads to incorrect cutting force estimations. The new model developed in this study is based on an analysis of the penetration force and energy dissipation using fracture mechanics, similarity of chip geometry, and edge chipping tests on four different rock materials. It is found that the peak indentation force and the depth of cut follow a power law, that the new model can reasonably estimate the experimental measurements, and that it provides useful information for the shape optimization of point-attack picks in mechanical excavation.
Estimating the Peak Indentation Force of the Edge Chipping of Rocks Using Single Point-Attack Pick
Abstract This article establishes a new model for estimating the peak indentation force of the edge chipping of rocks when using a conical or a pyramidal point-attack pick. The investigation points out that the existing formulation in the literature is based on an inappropriate stress assumption and equilibrium, and hence leads to incorrect cutting force estimations. The new model developed in this study is based on an analysis of the penetration force and energy dissipation using fracture mechanics, similarity of chip geometry, and edge chipping tests on four different rock materials. It is found that the peak indentation force and the depth of cut follow a power law, that the new model can reasonably estimate the experimental measurements, and that it provides useful information for the shape optimization of point-attack picks in mechanical excavation.
Estimating the Peak Indentation Force of the Edge Chipping of Rocks Using Single Point-Attack Pick
Bao, R. H. (author) / Zhang, L. C. (author) / Yao, Q. Y. (author) / Lunn, J. (author)
2011
Article (Journal)
Electronic Resource
English
BKL:
38.58
Geomechanik
/
56.20
Ingenieurgeologie, Bodenmechanik
/
38.58$jGeomechanik
/
56.20$jIngenieurgeologie$jBodenmechanik
RVK:
ELIB41
Estimating the Peak Indentation Force of the Edge Chipping of Rocks Using Single Point-Attack Pick
| British Library Online Contents | 2011
Estimating the Peak Indentation Force of the Edge Chipping of Rocks Using Single Point-Attack Pick
| Online Contents | 2011
Edge chipping of borosilicate glass by blunt indentation
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On the mechanics of edge chipping from spherical indentation
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A force-indentation model for brittle rocks
| Online Contents | 1989