Prefailure and Post-Failure Soil Plasticity Models

by M. M. Mehrabadi, Grad. Student; Dept. of Mech. Engrg., Tulane Univ., New Orleans, La.,
Stephen C. Cowin, Prof. of Mechanics; Dept. of Biomedical Engrg., Tulane Univ., New Orleans, La.,


Serial Information: Journal of the Engineering Mechanics Division, 1980, Vol. 106, Issue 5, Pg. 991-1003


Document Type: Journal Paper

Errata: (See full record)

Abstract: It is shown in this paper that a slightly modified form of the rigid-plastic yield-vertex model for geological materials will contain as a special case both the rigid-plastic form of the yield-vertex model and the sliding deformation model. This result is interesting because the yield-vertex model is a prefailure model and the sliding deformation model is a post-failure model. The specific result of interest is that, if the two pairs of localization directions in the nonwork-hardening form of the rigid-plastic yield-vertex model coincide, then the continued deformation in the post-failure regime is that hypothesized in the sliding deformation model. The analysis is confined to two dimensions.

Subject Headings: Plasticity | Geology | Sliding effects | Material failures

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