Quasistatic Shock Waves: A Mechanism for Nonuniform Compaction in Porous Rock
- Sandia National Laboratories
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.
- Research Organization:
- Sandia National Labs., Albuquerque, NM (US); Sandia National Labs., Livermore, CA (US)
- Sponsoring Organization:
- US Department of Energy (US)
- DOE Contract Number:
- AC04-94AL85000
- OSTI ID:
- 761952
- Report Number(s):
- SAND2000-2221J
- Journal Information:
- Journal of Geophysical Research, Journal Name: Journal of Geophysical Research
- Country of Publication:
- United States
- Language:
- English
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