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A unified elasto-viscoplasticity model for clays, part I: Theory
Abstract A unified elasto-viscoplasticity model is formulated for describing the stress-strainpore pressure-time behavior of saturated cohesive soils under general three-dimensional stress conditions. The limit surface and the conjugated static yield surface (elastic domain) form the basic framework from which the time- (aging and creep) and rate- effects can be conveniently accounted for by using a single internal state variable - preconsolidation pressure. The attendant evolution law for the internal state variable is formulated on the basis of phenomenological characteristics presented by Leroueil, et al, (1985) [1]. A detailed review of macroscopic characteristics of clays and mathematic derivations of the proposed viscoplasticity theory are presented in this paper.
A unified elasto-viscoplasticity model for clays, part I: Theory
Abstract A unified elasto-viscoplasticity model is formulated for describing the stress-strainpore pressure-time behavior of saturated cohesive soils under general three-dimensional stress conditions. The limit surface and the conjugated static yield surface (elastic domain) form the basic framework from which the time- (aging and creep) and rate- effects can be conveniently accounted for by using a single internal state variable - preconsolidation pressure. The attendant evolution law for the internal state variable is formulated on the basis of phenomenological characteristics presented by Leroueil, et al, (1985) [1]. A detailed review of macroscopic characteristics of clays and mathematic derivations of the proposed viscoplasticity theory are presented in this paper.
A unified elasto-viscoplasticity model for clays, part I: Theory
Liang, Robert Y. (author) / Ma, Fenggang (author)
Computers and Geotechnics ; 13 ; 71-87
1992-05-11
17 pages
Article (Journal)
Electronic Resource
English
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