ELASTOPLASTIC STRESS-STRAIN THEORY FOR COHESIONLESS SOIL-DISCUSSION

The paper under discussion describes the general 3- dimensional stress-strain behavior of granular soil. Although it is made clear that failure criteria have been developed to describe the behavior of Monterey No. 0 Sand, as this has been shown to behave isotropically, is is considered that the utilization of the stress invariants can be made independent of this constraint. Therefore, the application of the failure criteria to other sands is thought equally acceptable, and the discussers have shown it to be applicable to experimental work that thy have previously carried out. It is noted that Monterey No. 0 Sand has an unloading/reloading modulus dependent on confining stress, and that this factor has been used in the elastic strains. It is considered unlikely that this would be generally applicable as the unloading/reloading modulus for other sands has been shown to depend on stress levels attained during the cycling process. Comments are also made regarding the author's representation of the hysterisis loop, and on certain equations presented in the paper.

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  • Accession Number: 00141315
  • Record Type: Publication
  • Report/Paper Numbers: ASCE #11670 Proceeding
  • Files: TRIS
  • Created Date: Oct 26 1976 12:00AM