RESEARCH PAPERS: Rock Mechanics/Emerging Energy Technologies/Drilling

Rock Bit Cutter Tooth Design and Analysis

[+] Author and Article Information
G. C. Feng, P. W. Schumacher

Reed Rock Bit Company, Houston, Tex. 77252

J. Energy Resour. Technol 105(2), 138-144 (Jun 01, 1983) (7 pages) doi:10.1115/1.3230893 History: Received June 01, 1982; Revised October 15, 1982; Online October 22, 2009


The finite element method was used to analyze the stresses in a rock bit cutter tooth under applied loads. Detailed finite element models were constructed to allow accurate descriptions of the structural material properties of a tooth design which includes carburization and hardmetal application. Numerical solutions were obtained for investigating stress concentrations and plastic region growths in a cutter tooth when loaded beyond its yield point. It was found that the finite element method can be a powerful tool for improving the performance of a cutter tooth. Design objectives can be achieved through parameteric studies of stress level variations against geometry and material property changes on a computer system.

Copyright © 1983 by ASME
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