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An implicit constitutive algorithm for finite strain Cam-clay elasto-plastic model

Lookup NU author(s): Professor Mohamed Rouainia

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Abstract

This work is directed toward the formulation and analysis of the modi"ed Cam-clay critical state model within the framework of isotropic multiplicative "nite strains. A suitable energy function, in which the shear modulus is made to depend on the mean pressure, is chosen allowing the hyperelastic response to be energy conserving. As a result of the use of Eulerian logarithmic stretches as strain measures in conjunction with an exponential approximation of the plastic #ow rule, the small strain integration algorithms, and the corresponding consistent tangent operators, automatically extend to the "nite strain regime. Numerical simulations are provided to demonstrate the stability and good performance of the proposed formulation.

Publication metadata

Author(s): Rouainia M, Muir Wood D

Publication type: Article

Publication status: Published

Journal: Mechanics of Cohesive-Frictional Materials

Year: 2000

Volume: 5

Issue: 6

Pages: 469-489

Print publication date: 01/08/2000

ISSN (print): 1082-5010

Publisher: John Wiley & Sons Ltd.

URL: http://dx.doi.org/10.1002/1099-1484(200008)5:6<469::AID-CFM105>3.0.CO;2-9

DOI: 10.1002/1099-1484(200008)5:6<469::AID-CFM105>3.0.CO;2-9

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