Accession Number:

AD0648448

Title:

TWO-DIMENSIONAL ANALYSIS OF STRESS AND STRAIN IN SOILS. REPORT III. PLANE-STRAIN DEFORMATION ANALYSIS OF SOIL.

Descriptive Note:

Research rept.,

Corporate Author:

MASSACHUSETTS INST OF TECH CAMBRIDGE DEPT OF CIVIL ENGINEERING

Personal Author(s):

Report Date:

1966-12-01

Pagination or Media Count:

256.0

Abstract:

The applicability of the theory of plasticity to soil mechanics is examined. Four different yield criteria are proposed Trescas, Henckys and von Mises, Drucker and Pragers generalization of the Mohr-Coulomb law, and a strain-hardening model which allows plastic compression. The large volume changes predicted by the Drucker-Prager criterion are described, and the development of more reasonable strain-hardening models by Roscoe and his associates is summarized. The strain-hardening model used is based on Roscoes but is simplified for computational reasons. Analysis leading to incremental stress-strain relations for the four yield criteria is presented. A lumped parameter mathematical model, originally proposed by Ang and Harper 1964, is described and the stress-strain relations are developed in terms of it. A special relation for elastically and plastically incompressible material yielding according to Trescas or Henckys and von Mises criterion, is developed. Computer programs for all five of these relations and for purely elastic relations were written. Results of twelve runs on a flexible footing problem are shown. Author

Subject Categories:

  • Soil Mechanics

Distribution Statement:

APPROVED FOR PUBLIC RELEASE