Please use this identifier to cite or link to this item:
http://bura.brunel.ac.uk/handle/2438/7244
Title: | Quasi-static stationary-periodic model of percussive deep drilling |
Authors: | Mikhailov, SE Namestnikova, IV |
Keywords: | Elasticity;Boundary rupture;Free-boundary problem;Contact problem |
Issue Date: | 2005 |
Publisher: | Patron Editore |
Citation: | In Proceedings of the 11th International Conference on Computer Methods and Advances in Geomechanics, Bologna, Italy, 1: 103 - 109, 2005 |
Abstract: | In the percussively deep drilling, the rock is modeled by an infinite elastic medium with a semi-infinite cylindrical bore-hole having a curvilinear bottom. First, the stationary indentation is formulated as a non-classical non-linear free-boundary contact problem with unknown rupturing and non-rupturing parts of the bore-hole boundary. Then the stationary-periodic per- cussive drilling problem is reduced to the stationary one on the rupture progression stage of the cycle and to the classical contact problem on the reverse and progression-before-rupture stages of the cycle. This provides a nonlinear progression - force diagram for the bit dynamics prediction. |
Description: | Copyright @ 2005 Patron Editore |
URI: | http://bura.brunel.ac.uk/handle/2438/7244 |
Appears in Collections: | Publications Dept of Mathematics Research Papers Mathematical Sciences |
Files in This Item:
File | Description | Size | Format | |
---|---|---|---|---|
Fulltext.pdf | 184.31 kB | Adobe PDF | View/Open |
Items in BURA are protected by copyright, with all rights reserved, unless otherwise indicated.