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121116s2012 txu obm 000 0 eng d |
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|a (OCoLC)ocn818359675
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|a (OCoLC)818359675
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|a (TxCM)http://hdl.handle.net/1969.1/ETD-TAMU-2012-08-11674
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|a TXA
|c TXA
|d UtOrBLW
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|a TXAM
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|a 2012
|a Dissertation
|a 1969.1/ETD-TAMU-2012-08-11674
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|a Song, Ahran.
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|a Deformation analysis of sand specimens using 3D digital image correlation for the calibration of an elasto-plastic model.
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|a [College Station, Tex.] :
|b [Texas A&M University],
|c [2012]
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|a 1 online resource.
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|a text
|b txt
|2 rdacontent
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|a computer
|b c
|2 rdamedia
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|a online resource
|b cr
|2 rdacarrier
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| 500 |
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|a "Major Subject: Civil Engineering"
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|a Description from author supplied metadata (automated record created 2012-10-22 13:24:58).
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| 502 |
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|b Doctor of Philosophy
|c Texas A&M University
|d 2012
|o http://hdl.handle.net/1969.1/ETD-TAMU-2012-08-11674
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|a Includes bibliographical references.
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|a Text (Dissertation)
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|a The use of Digital Image Correlation (DIC) technique has become increasingly popular for displacement measurements and for characterizing localized material deformation. In this study, a three-dimensional digital image correlation analysis (3D-DIC) was performed to investigate the displacements on the surface of isotropically consolidated and drained sand specimens during triaxial compression tests. The deformation of a representative volume of the material captured by 3D-DIC is used for the estimation of the kinematic and volumetric conditions of the specimen at different stages of deformation, combined with the readings of the global axial compression of the specimen. This allowed for the characterization of a Mohr-Coulomb plasticity model with hardening and softening laws. In addition, a two-dimensional axisymmetric finite element model was built to simulate the actual experimental conditions, including both the global and local kinematics effects captured by 3D digital image correlation analysis on the boundary of the specimen. A comparison between the axisymmetic model predictions and the experimental observations showed good agreement, for both the global and local behavior, in the case of different sand specimen configuration, including loose, dense and half-loose half-dense specimens.
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|a Electronic resource.
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|a Major Civil Engineering.
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|a Digital image correlation
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|a Heterogeneous media
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|a Local deformation
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|a Sand specimen
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|a Finite element method
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|a Triaxial compression test
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|a Medina-Cetina, Zenon,
|e thesis advisor.
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|u http://hdl.handle.net/1969.1/ETD-TAMU-2012-08-11674
|z Link to OAK Trust copy
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|a Texas A&M University
|b College Station
|c Electronic Resources
|d Available Online
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|e 2012 Dissertation 1969.1/ETD-TAMU-2012-08-11674
|h Other scheme
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| 998 |
f |
f |
|a 2012 Dissertation 1969.1/ETD-TAMU-2012-08-11674
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|l Available Online
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