Numerical modeling of tool-rock interaction in laminated formations

Based on a review of the literature, a numerical model of the chip formation process in laminated rock formations has been developed. The model uses a finite element approach to simulate the anisotropic behavior of laminated rock formations. The finite element program has been developed with the assumption of two-dimensional plane strain. Anisotropic elements and dynamic loading are used to represent the actual penetration process of a bit tooth. An iteration method, using an incremental approach, has been applied for the continuous tooth penetration process. Displacements and axial loads have been modified after each iteration. The program provides quantitative information on stresses and displacements during the penetration process. Furthermore, bit deviations in laminated formations can be inferred.. Different rock strength characteristics have been employed on each side of the bit Bit tooth-rock interaction for various formation dips (from ()O to 9(0) of the Berea sandstone have been simulated and compared with experimental results.

Name thesis:degree_name

Master of Science

Level thesis:degree_level

masters

Discipline thesis:degree_discipline

Mining Engineering

Department dc:contributor.department

Mining Engineering

Grantor dc:publisher

Virginia Tech

Year dc:date.issued

1990

Author dc:creator

• Ouyang, Hsien-Ju

Chair dc:contributor.committeechair

• Karfakis, Mario G.

Committee members dc:contributor.committeemember

• Haycocks, C.
• Topuz, E.
• Karmis, Michael E.

Statement dc:rights

• In Copyright

Licence dc:rights.uri

• http://rightsstatements.org/vocab/InC/1.0/

Language dc:language.iso

en

Dc Identifier Other

etd-03122009-040633

OAI identifier oai:identifier

oai:vtechworks.lib.vt.edu:10919/41463