Theoretical Aspects of the Elastoplastic-Viscoplastic Bounding Surface Model for Cohesive Soils

Kaliakin, Victor N.; Dafalias, Yannis F.

doi:10.3208/sandf1972.30.3_11

Cited by 92 publications

(29 citation statements)

References 12 publications

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“…The first is the traditional theoretical method, including the elasto-plastic [7,16] and elasto-visco-plastic models [30,31], where the deformation of each loading cycle is strictly counted. This method reveals the deformation mechanism of soils subjected to cyclic loading.…”

Section: Cyclic Loading Conditionmentioning

confidence: 99%

Modelling long-term deformation of granular soils incorporating the concept of fractional calculus

et al. 2015

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Many constitutive models exist to characterise the cyclic behaviour of granular soils but can only simulate deformations for very limited cycles. Fractional derivatives have been regarded as one potential instrument for modelling memory-dependent phenomena. In this paper, the physical connection between the fractional derivative order and the fractal dimension of granular soils is investigated in detail. Then a modified elastoplastic constitutive model is proposed for evaluating the long-term deformation of granular soils under cyclic loading by incorporating the concept of factional calculus. To describe the flow direction of granular soils under cyclic loading, a cyclic flow potential considering particle breakage is used. Test results of several types of granular soils are used to validate the model performance. Abstract Lots of constitutive models exist to characterise the cyclic behaviour of granular soils but can only simulate deformations for very limited cycles. Fractional derivatives have been regarded as one potential instrument for modelling memory-dependent phenomena. In this paper, the physical connection between the fractional derivative order and the fractal dimension of granular soils is investigated in detail. Then a modified elasto-plastic constitutive model is proposed for evaluating the long-term deformation of granular soils under cyclic loading by incorporating the concept of factional calculus. To describe the flow direction of granular soils under cyclic loading, a cyclic flow potential considering particle breakage is used. Test results of several types of granular soils are used to validate the model performance.

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Section: Cyclic Loading Conditionmentioning

confidence: 99%

Modelling long-term deformation of granular soils incorporating the concept of fractional calculus

et al. 2015

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“…A simple constitutive model that can describe the nonlinearity, creep and stress relaxation of cohesive soil was used in the present study. The coupling of viscoplastic response with elastoplastic response of soils, as discussed in Kaliakin and Dafalias (1990) was not considered in the model, which is only approximate. However, the Finite Element procedure employing this soil model was still able to duplicate the salient features of long-term soil-reinforcement interaction, as indicated by the satisfactory prediction of model test results.…”

Section: Discussionmentioning

confidence: 99%

Long-term behavior of GRS retaining walls with marginal backfill soils

Liu

Wang

Song

2009

Geotextiles and Geomembranes

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“…Later, the Modified Cam-clay model (Roscoe and Burland, 1968) was developed with an elliptical yield surface, and is widely used for simulating the mechanical behavior of clays. Several well known clay models (Kavvadas, 1982;Anandarajah and Dafalias, 1986;Banerjee and Yousif, 1986;Dafalias, 1986Dafalias, , 1987Kaliakin and Dafalias, 1990;Crouch and Wolf, 1992;Whittle and Kavvadas, 1994) are extensions of the Modified Cam-clay model. Some models (for example, Crouch and Wolf, 1992) adopted a shape parameter R (≥2.0) in extending the Modified Cam-clay yield surface to the tension side.…”

Section: Yield Surface and Plastic Potential Surfacementioning

confidence: 99%