Quasistatic Shock Waves: A Mechanism for Nonuniform Compaction in Porous Rock

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Recent studies have observed compaction zones pass through porous rock under axisymmetric compression. An initially thin, compacted layer appears at the yield point of the stress-strain curve and then grows by thickening in the direction of maximum compression at constant stress. Strain localization theory has been applied to compaction to explain the formation of these features. This paper describes the growth of the compaction zones, that is, the propagation of their boundaries, in terms of shock wave analysis. The ratio of the applied shortening rate to the velocity of the boundary is related to the porosity change across the boundary. ... continued below

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11 p.

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OLSSON,WILLIAM A. September 8, 2000.

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  • Sandia National Laboratories
    Publisher Info: Sandia National Labs., Albuquerque, NM, and Livermore, CA (United States)
    Place of Publication: Albuquerque, New Mexico

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Description

Recent studies have observed compaction zones pass through porous rock under axisymmetric compression. An initially thin, compacted layer appears at the yield point of the stress-strain curve and then grows by thickening in the direction of maximum compression at constant stress. Strain localization theory has been applied to compaction to explain the formation of these features. This paper describes the growth of the compaction zones, that is, the propagation of their boundaries, in terms of shock wave analysis. The ratio of the applied shortening rate to the velocity of the boundary is related to the porosity change across the boundary. Certain features of the stress-strain curve are explained by the model.

Physical Description

11 p.

Notes

OSTI as DE00761952

Medium: P; Size: 11 pages

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  • Journal Name: Journal of Geophysical Research; Other Information: Submitted to Journal of Geophysical Research

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  • Report No.: SAND2000-2221J
  • Grant Number: AC04-94AL85000
  • Office of Scientific & Technical Information Report Number: 761952
  • Archival Resource Key: ark:/67531/metadc722729

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  • September 8, 2000

Added to The UNT Digital Library

  • Sept. 29, 2015, 5:31 a.m.

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  • April 6, 2017, 7:35 p.m.

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OLSSON,WILLIAM A. Quasistatic Shock Waves: A Mechanism for Nonuniform Compaction in Porous Rock, article, September 8, 2000; Albuquerque, New Mexico. (digital.library.unt.edu/ark:/67531/metadc722729/: accessed June 22, 2018), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.