Título: | 3D ANALYTICAL MODEL FOR CUTTING APPLIED IN THE DETERMINATION OF ROCK PROPERTIES THROUGH SIMPLE CUTTING TESTS | ||||||||||||||||||||||||||||||||||||||||
Autor: |
DANIEL DUQUE ESTRADA F DE MELO |
||||||||||||||||||||||||||||||||||||||||
Colaborador(es): |
ARTHUR MARTINS BARBOSA BRAGA - Orientador SERGIO AUGUSTO BARRETO DA FONTOURA - Coorientador |
||||||||||||||||||||||||||||||||||||||||
Catalogação: | 27/MAR/2015 | Língua(s): | PORTUGUESE - BRAZIL |
||||||||||||||||||||||||||||||||||||||
Tipo: | TEXT | Subtipo: | THESIS | ||||||||||||||||||||||||||||||||||||||
Notas: |
[pt] Todos os dados constantes dos documentos são de inteira responsabilidade de seus autores. Os dados utilizados nas descrições dos documentos estão em conformidade com os sistemas da administração da PUC-Rio. [en] All data contained in the documents are the sole responsibility of the authors. The data used in the descriptions of the documents are in conformity with the systems of the administration of PUC-Rio. |
||||||||||||||||||||||||||||||||||||||||
Referência(s): |
[pt] https://www.maxwell.vrac.puc-rio.br/projetosEspeciais/ETDs/consultas/conteudo.php?strSecao=resultado&nrSeq=24352&idi=1 [en] https://www.maxwell.vrac.puc-rio.br/projetosEspeciais/ETDs/consultas/conteudo.php?strSecao=resultado&nrSeq=24352&idi=2 |
||||||||||||||||||||||||||||||||||||||||
DOI: | https://doi.org/10.17771/PUCRio.acad.24352 | ||||||||||||||||||||||||||||||||||||||||
Resumo: | |||||||||||||||||||||||||||||||||||||||||
Rock cutting mechanics has been studied in order to better understand
drilling process in cutter scale. The cutting energy is mainly dependent of cutter
orientation and rock properties. It was previously reported in the literature that
specific energy is strongly dependent of backrake and siderake. Although there
have been good attempts to develop an analytical solution to describe the cutting
process, the siderake effects are not taken into account. This Thesis proposes an
analytical solution for the rock cutting considering both backrake and siderake.
The proposed model is considered for sharp and blunt cutters and the solution
agrees with preliminary experimental investigation based on the cutting action of
clays. With the new model, a parametric study for two hypothetical rocks is made,
showing that higher backrakes and/or siderakes increase the specific energy in an exponential-like trend. The backrake effect is strongly dependent of the rock
internal friction angle though. The effects depth of cut and confining pressure
were also investigated. Moreover, the effects of cutter bluntness are presented
through the E-S diagram.
|
|||||||||||||||||||||||||||||||||||||||||
|