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Modeling gap effects in jointed rock

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Please use this identifier to cite or link to this item: http://hdl.handle.net/1928/20751

Modeling gap effects in jointed rock

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Title: Modeling gap effects in jointed rock
Author: Baker, Tyler
Advisor(s): Khraishi, Tariq
Committee Member(s): Schreyer, Howard
Sulsky, Deborah
Department: University of New Mexico. Dept. of Mechanical Engineering
Subject: gap
joint
constitutive
numerical
modeling
wave
propagation
LC Subject(s): Joints (Geology)--Mathematical models.
Elastic wave propagation--Mathematical models.
Degree Level: Masters
Abstract: Joints represent planes of discontinuity in homogeneous media. The purpose of this investigation is to model joints and determine the effects on waves as they propagate through joints in rock. Properties of interest include energy dissipation, energy transmission, and changes in peak stress and impulse as waves propagate through one or more joints. Rather than combining rock joints into the constitutive model of the parent rock as typically done, this research seeks to model joints discretely. By capturing the behavior of individual rock joints, discrete effects on wave propagation are gathered. The ability to lump multiple joints into one equivalent joint is also explored. The key result is that joints affect short duration pulses more than long duration pulses. A single equivalent joint transmits less energy than a set of multiple joints.
Graduation Date: May 2012
URI: http://hdl.handle.net/1928/20751


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