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Author Mikhailov, S. E.
Source CiteSeerX
Content type Text
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Subject Domain (in DDC) Computer science, information & general works ♦ Data processing & computer science
Subject Keyword Quasi-static Stationary-periodic Model ♦ Percussive Deep Drilling ♦ Rupture Progression Stage ♦ Unknown Rupturing ♦ Bit Dynamic Prediction ♦ Non-classical Non-linear Free-boundary Contact Problem ♦ Progression-before-rupture Stage ♦ Deep Drilling ♦ Stationary Indentation ♦ Curvilinear Bottom ♦ Infinite Elastic Medium ♦ Bore-hole Boundary ♦ Stationary One ♦ Semi-infinite Cylindrical Bore-hole ♦ Stationary-periodic Percussive Drilling Problem ♦ Classical Contact Problem ♦ Non-rupturing Part ♦ Nonlinear Progression Force Diagram
Abstract 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 percussive 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. 1
Educational Role Student ♦ Teacher
Age Range above 22 year
Educational Use Research
Education Level UG and PG ♦ Career/Technical Study
Learning Resource Type Article