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<p>Bits (Drilling and boring)<br />Rock-drills<br />Rocks -- Analysis -- Mathematical models<br />Rocks -- Testing<br />Rock mechanics</p>
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Bit Penetration Into Rock - A Finite Element Study, Jaw-Kuang Wang
Bit Penetration Into Rock - A Finite Element Study, Jaw-Kuang Wang
Doctoral Dissertations
"A finite element approach has been developed to simulate bit penetration from bit-rock interaction to chip formation. A mathematical rock failure model, based on a review of the existing literature on rock tests, has been proposed to represent post-failure rock behavior and applied in the penetration simulations. The finite element program has been developed for two dimensional plane strain problems with non-linear material properties, geometrical nonlinearities and fracture. An anisotropic element as well as variable stiffness and stress release methods have been used. An iteration method, using an incremental approach, has been applied for continuous penetration and modifications of material …