The Rabinowicz abrasive wear model was adopted. The coefficient K ɛ of teeth abrasive wear is obtained through experiments. The interaction model between cone bit and rock was established by Finite Element Software. The problems of large rock morphing and slowing to compute were solved through Mesh Redrawing Method and parallel computing technology. The mount of tooth wear and the appearance of tooth wear of three tooth shapes were analyzed, which were compared with the experiment situations. The results showed that the finite element model could predict the tooth life and its wear very well. The relationship between ROP, rotational speed and tooth wear and rock was explored, providing the bit selection and parameter recommendation in drilling with basis.
Journal of Failure Analysis and Prevention – Springer Journals
Published: Mar 21, 2018
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