Analysis of Steady Cone Penetration in Clay

Yu, Hai‐Sui; Herrmann, Leonard R.; Boulanger, Ross W.

doi:10.1061/(asce)1090-0241(2000)126:7(594)

Cited by 86 publications

(29 citation statements)

References 15 publications

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“…The most usual finite element equation for updated Lagrange description is expressed as (12) where [r K J and [r KG] are global linear and geometric (initial stress) stiffness matrices while the vector L1F presents the load vector with the effects of the element surface traction force, the element body force and the element initial stresses.…”

Section: Finite Element Discretisationmentioning

confidence: 99%

“…Usually updated Lagrangian formulation (5) and its FE model (12) are related to fixed finite element mesh. The first stage in numerical analysis of CPT is to verify suitability or drawbacks of the traditional approach to large penetration problem.…”

Section: Large Penetration Without Remeshingmentioning

confidence: 99%

“…Because of the above source of uncertainty, the iterative procedure for adjusting the initial deformation to eliminate the equilibrium imbalance is suggested [9]. However, this iterative procedure cannot remove all the errors that exist in the strain path stress solutions [12].…”

Section: Introductionmentioning

confidence: 99%

“…Uncoupling of material and nodal point displacements implies that convection has to be taken into account to be able to update the state at the nodal points. As pointed out by [34], the use of smoothing procedures for interpolating stress and strain fields does not always give stable and accurate solutions.…”

Section: Introductionmentioning

confidence: 99%

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Numeric Analysis of Large Penetration of the Cone in Undrained Soil Using Fem

Markauskas

Kačianauskas

Katzenbach

2003

Journal of Civil Engineering and Management

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Abstract. Numeric analysis of the large penetration of the cone in undrained soil using finite element method (FEM) is presented. Until now the computation procedures has not been developed to such an extent, that they could provide numerical solution of large cone penetration problem. In this paper for solving of the large cone penetration problem an updated Lagrangian formulation and finite element method are used. To overcome large distortion of the finite element geometry during cone penetration leading to illconditioning equations a remeshing technique is developed. The proposed remeshing technique enables the simulation of the penetration process until steady cone penetration is reached. The analysis of the cone penetration in undrained soil is provided. The comparison of current numerical results and other authors' results are presented.

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Section: Finite Element Discretisationmentioning

confidence: 99%

Section: Large Penetration Without Remeshingmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Numeric Analysis of Large Penetration of the Cone in Undrained Soil Using Fem

Markauskas

Kačianauskas

Katzenbach

2003

Journal of Civil Engineering and Management

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“…A range of constitutive models can now be applied to complex soil geometries in small and more recently large-strain analyses. Yu et al (2000) developed a technique to simulate steady state cone penetration. In their method, the penetrometer was placed in a pre-bored hole and only a few steps of penetration were modelled.…”

Section: Recent Developments In Computer Technology Have Led To the Amentioning

confidence: 99%

Modelling the Cone Penetration Test in sand using Cavity Expansion and Arbitrary Lagrangian Eulerian Finite Element Methods

Tolooiyan

Gavin

2011

Computers and Geotechnics

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Abstract:The paper set out two techniques to model the Cone Penetration Test (CPT) end resistance, q c in a dense sand deposit using commercial finite element programmes. In the first approach, Plaxis was used to perform spherical cavity expansion analyses at multiple depths. Two soil models, namely; the MohrCoulomb (MC) and Hardening Soil (HS) models were utilized. When calibrated using simple laboratory element tests, the HS model was found to provide good estimates of q c . However, at shallow depths, where the over-consolidation ratio of the sand was highest, the relatively large horizontal stresses prevented the full development of the failure zone resulting in under-estimation of the q c value. The second approach involved direct simulation of cone penetration using a large-strain analysis implemented in Abaqus/Explicit. The Arbitrary Lagrangian Eulerian (ALE) technique was used to prevent excessive mesh deformation. Although the Druker-Prager soil model used was not as sophisticated as the HS model, excellent agreement was achieved between the predicted and measured q c profiles.

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On the calculation of cumulative strain around full‐flow penetrometers in steady‐state conditions

Osman

Randolph

2014

Num Anal Meth Geomechanics

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Summary An approximate solution for the effects of high strain rates, and gradual strength degradation, on the penetration resistance of penetrometers can be obtained by combining the strain‐path method with the classical upper bound theorem. The stream path calculations require the integration of the material constitutive equation along the streamlines. Unless the geometry is simple so that the integration can be evaluated analytically, numerical procedures are required to backtrack streamlines. The strain at any location is calculated by finding the streamline that passes through the given point and integrating the strain rate along that streamline from its inlet boundary. Thus, the calculations can be complicated, and errors can be accumulated during the calculation procedure. This paper presents an efficient approach for evaluating cumulative strains around penetrometers without the need to backtrack individual streamlines. In this approach, the strain components are treated as field variables. The global solution is obtained using the streamline upwind Petrov–Galerkin method. The new method together with an Eulerian‐based finite element formulation was used to study the cone penetration test and evaluate the effect of strain softening on the cone resistance. Copyright © 2014 John Wiley & Sons, Ltd.

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Analysis of Steady Cone Penetration in Clay

Cited by 86 publications

References 15 publications

Numeric Analysis of Large Penetration of the Cone in Undrained Soil Using Fem

Numeric Analysis of Large Penetration of the Cone in Undrained Soil Using Fem

Modelling the Cone Penetration Test in sand using Cavity Expansion and Arbitrary Lagrangian Eulerian Finite Element Methods

On the calculation of cumulative strain around full‐flow penetrometers in steady‐state conditions

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