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Strain localization in olivine aggregates at high temperature: A laboratory comparison of constant-strain-rate and constant-stress boundary conditions

Abstract:

We performed high-strain torsion experiments on aggregates of Fo 50 olivine to test the influence of imposed boundary conditions on localizing deformation. We deformed both solid and thin-walled cylinders of Fo 50 either at constant strain rate or at constant stress. Samples deformed in constant-strain-rate experiments reached a peak stress followed by weakening at a continually decreasing weakening rate. In contrast, samples deformed in constant-stress experiments weakened at an accelerating...

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Publication status:
Published

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Publisher copy:
10.1016/j.epsl.2012.04.016

Authors


Hansen, LN More by this author
Zimmerman, ME More by this author
Dillman, AM More by this author
Kohlstedt, DL More by this author
Journal:
EARTH AND PLANETARY SCIENCE LETTERS
Volume:
333
Pages:
134-145
Publication date:
2012-06-01
DOI:
ISSN:
0012-821X
URN:
uuid:b3bd013f-3dbf-4547-936d-5c4061b0185a
Source identifiers:
410231
Local pid:
pubs:410231

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