Evaluation of the Modified Cam Clay model in basin and petroleum system modeling (BPSM) loading conditions

Miranda, P.A.M.N.; Vargas, Edson; Moraes, Anderson

doi:10.1016/j.marpetgeo.2019.104112

Cited by 8 publications

(5 citation statements)

References 8 publications

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“…The MCC model is an elasto-plastic model with the yield function of Equation (10). Theoretical details can be found in the relevant literature [25][26][27].…”

Section: Physical Equations For Finite Element Analysesmentioning

confidence: 99%

Integrated Time-Dependent Analysis of a Hydraulic Structure on Soft Foundations during Construction

Xu,

Ye,

Pan

et al. 2024

Water

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An integrated model that considers multiphysics is necessary to accurately analyze the time-dependent response of hydraulic structures on soft foundations. This study develops an integrated superstructure–foundation–backfills model and investigates the time-dependent displacement and stress of a lock head project on a soft foundation during the construction period. Finite element analyses are conducted, incorporating a transient thermal creep model for concrete and an elasto-plastic consolidation model for the soil. The modified Cam-clay model is employed to describe the elasto-plastic behavior of the soil. Subsequently, global sensitivity analyses are conducted to determine the relative importance of the model parameters on the system’s response, using Garson’s and partial derivative algorithms based on the backpropagation (BP) neural network. The results indicate that the integrated system exhibits pronounced time-dependent displacement and stress, with dangerous values appearing during specific periods. These values are easily neglected, highlighting the importance of integrated time-dependent analysis. Construction activities, particularly the backfilling process, could cause a sudden change in stress and significantly impact the stress redistribution of the superstructure. Additionally, the mechanical properties of concrete have a significant impact on the stress on the superstructure, while the mechanical properties of the soil control the settlement of the integrated system.

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“…The MCC model is an elasto-plastic model with the yield function of Equation (10). Theoretical details can be found in the relevant literature [25][26][27].…”

Section: Physical Equations For Finite Element Analysesmentioning

confidence: 99%

Integrated Time-Dependent Analysis of a Hydraulic Structure on Soft Foundations during Construction

Xu,

Ye,

Pan

et al. 2024

Water

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“…The modified Cam-clay (MCC) model was originally developed to describe the stress-strain strength characteristics of normally consolidated clay based on Roscoe and Burland's critical state theory [10]. A number of modifications have been made to the MCC to improve its ability to model geomaterials, such as [11][12][13][14][15][16][17][18][19][20][21]. Within the MCC and its family, the critical state void ratio (e cs ) defined by the critical state line (CSL) is assumed to be a straight line lower than the normally consolidated line (NCL) with the same slope λ, as shown in Figure 1a.…”

Section: Introductionmentioning

confidence: 99%

A Simplified Silty Sand Model

Kaewhanam

Chaimoon

2023

Applied Sciences

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A unified critical state model has been developed for both clean sand and silty sand using the modified Cam-clay model (MCC). The main feature of the proposed model is a new critical state line equation in the e-ln(p) plane that is capable of handling both straight and curved test results. With this feature, the error in calculating plastic volumetric strain is, in theory, eliminated. Another crucial feature of the model is the transformed stress tensor based on the SMP (spatially mobilized plane) criterion, which takes into account the proper shear yield and failure of soil under three-dimensional stresses. Additionally, the proposed model applies the intergranular void ratio with the fines influence factor for silty sand. Only eight soil parameters are required for clean sand, and a total number of twelve soil parameters are needed for silty sand. This model not only enhances the predictive accuracy for granular soils but also broadens the applicability of the model to encompass silty sand in both drained and undrained analyses.

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“…[1][2][3] There are several works available regarding the development and application of compaction laws in basin modeling. Some recent works on purely mechanical compaction models include Albertz and Sanz, 4 Bernaud et al, 5 Crook et al, 6 Gutierrez and Wangen, 7 Guy et al, 8 Maghous et al, 9 Miranda et al 10 and Obradors-Prats et al 11 For chemo-mechanical compaction, one may refer to Angevine and Turcotte, 12 Broichhausen et al, 13 Brüch et al, 14 Obradors-Prats et al, 15 Oelkers et al, 16 Schneider et al, 17 Walderhaug 18 and Yang. 19 Simulation of sedimentary basins involves large space domains (kilometric scale) and large time periods (geological time scale).…”

Section: Introductionmentioning

confidence: 99%

Coupled poro‐mechanical tangent formulation applied to sedimentary basin modeling

Brüch

Guy

Lemos

et al. 2021

Num Anal Meth Geomechanics

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Sedimentary basin modeling involves large space domains and time periods.Reproducing the compaction processes of the sediment material requires the constitutive model to be formulated in the framework of large irreversible strains, taking both geometric and physical nonlinearities into account. This work presents a tangent formulation for the coupled poro-mechanical system of equations resulting from the weak form of the momentum and fluid mass balance equations. The proposed workflow is integrated in a thermo-poro-mechanical finite element basin simulator. At material level, purely mechanical and chemomechanical deformations are respectively addressed by means of plastic and viscoplastic components in the macroscopic state equations. The accuracy and efficiency of the proposed tangent formulation are assessed through the simulation of a basin geological scenario involving gravitational compaction and tectonic shortening. Both drained and undrained behaviors of the basin rocks are simulated. The procedure has significantly improved the convergence rate and reduced the computational cost with comparison to the original formulation based on the standard poro-elastic coefficients. In order to illustrate the potential of the basin simulator to deal with real case applications, a well model from the Neuquén basin in Argentina is also presented. The results are validated against available numerical and field data for porosity, pore-pressure and temperature.

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Evaluation of the Modified Cam Clay model in basin and petroleum system modeling (BPSM) loading conditions

Cited by 8 publications

References 8 publications

Integrated Time-Dependent Analysis of a Hydraulic Structure on Soft Foundations during Construction

Integrated Time-Dependent Analysis of a Hydraulic Structure on Soft Foundations during Construction

A Simplified Silty Sand Model

Coupled poro‐mechanical tangent formulation applied to sedimentary basin modeling

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