Dynamic modelling of retrogressive landslides with emphasis on the role of clay sensitivity

Xue, Zhang; Sloan, Scott W.; Oñate, Eugenio

doi:10.1002/nag.2815

Cited by 48 publications

(23 citation statements)

References 44 publications

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“…In [129], a mathematical programming framework is introduced to simulate landslide with a plasticity model using a Mohr-Coulomb yield criterion. In [132], an elasticviscoplastic model for progressive failure analysis of sensitive clays is presented while in [133], its application to landslide is shown. The same ideas have been extended to simulate submarine landslides in [130] and used to analyze the Saint Jude landslide case study in [134].…”

Section: Landslidesmentioning

confidence: 99%

A State of the Art Review of the Particle Finite Element Method (PFEM)

Cremonesi

Franci

Idelsohn

et al. 2020

Arch Computat Methods Eng

Self Cite

117

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The particle finite element method (PFEM) is a powerful and robust numerical tool for the simulation of multi-physics problems in evolving domains. The PFEM exploits the Lagrangian framework to automatically identify and follow interfaces between different materials (e.g. fluid–fluid, fluid–solid or free surfaces). The method solves the governing equations with the standard finite element method and overcomes mesh distortion issues using a fast and efficient remeshing procedure. The flexibility and robustness of the method together with its capability for dealing with large topological variations of the computational domains, explain its success for solving a wide range of industrial and engineering problems. This paper provides an extended overview of the theory and applications of the method, giving the tools required to understand the PFEM from its basic ideas to the more advanced applications. Moreover, this work aims to confirm the flexibility and robustness of the PFEM for a broad range of engineering applications. Furthermore, presenting the advantages and disadvantages of the method, this overview can be the starting point for improvements of PFEM technology and for widening its application fields.

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Section: Landslidesmentioning

confidence: 99%

A State of the Art Review of the Particle Finite Element Method (PFEM)

Cremonesi

Franci

Idelsohn

et al. 2020

Arch Computat Methods Eng

Self Cite

117

View full text Add to dashboard Cite

show abstract

“…This attractive approach was early used in the limit analysis of plastic problems (Krabbenhoft and Damkilde, 2003), elastoplastic finite element analysis (Zhang et al, 2014) and recently has been applied to discrete element methods (Meng et al, 2018). The FEM code we 5 use has been successfully applied to granular column collapses (Zhang et al, 2014), retrogressive failures of landslides in sensitive clays (Zhang et al, 2018) and submarine landslides . More details on the mathematical programming and on the validation of the model can be found in the mentioned papers.…”

Section: Pfem Model Configurationsmentioning

confidence: 99%

Shallow landslides modeling using a particle finite element model with emphasis on landslide evolution

Wang

Zhang

Tinti

2019

Preprint

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Abstract. Numerical modelling is a powerful tool to study the mechanism of landslides and constructs the foundation of many physically-based assessment methods applied to natural hazards. Usually, numerical analyses of landslides are carried out on the failure mechanism and on the propagation process separately. With the advantage of dealing with large deformation problems, the particle finite element method (PFEM), that is the particle extension of the traditional FEM, has the capability of simulating the entire evolution of the landslide from the generation to the deposition phase. To figure out the difference between a unified PFEM simulation and the usually adopted approaches that separate failure mechanism (static analysis) and run-out analysis (dynamic analysis), we implement a PFEM code that is applied first to a simple homogeneous slope model. Numerical results reveal that under the so-called critical condition the landslide comes to a stop with a slight modification of the original profile, while its profile is drastically changed if strength reduction is further applied. To test the capability of our model, we choose the 2013 Cà Mengoni landslide, northern Apennines, Italy, as a case study, since it behaved as if it were formed by homogeneous material. In virtue of the back-analysis of the run-out distance that we perform by using different material strength parameters, we show that the PFEM model is able to capture the variation of the observed landslide profile, and contributes to the understanding of the dynamics of the whole sliding process.

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“…For various applications of PFEM, six‐node (quadratic) triangle elements are always used in geotechnical applications (Zhang et al). When seeking to reduce the computational cost, low‐order finite elements such as three‐node triangular elements are very attractive for their simplicity and efficiency.…”

Section: Introductionmentioning

confidence: 99%

An edge‐based strain smoothing particle finite element method for large deformation problems in geotechnical engineering

Jin

Yuan

Yin

et al. 2020

Num Anal Meth Geomechanics

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Summary To solve large deformation geotechnical problems, a novel strain‐smoothed particle finite element method (SPFEM) is proposed that incorporates a simple and effective edge‐based strain smoothing method within the framework of original PFEM. Compared with the original PFEM, the proposed novel SPFEM can solve the volumetric locking problem like previously developed node‐based smoothed PFEM when lower‐order triangular element is used. Compared with the node‐based smoothed PFEM known as “overly soft” or underestimation property, the proposed SPFEM offers super‐convergent and very accurate solutions due to the implementation of edge‐based strain smoothing method. To guarantee the computational stability, the proposed SPFEM uses an explicit time integration scheme and adopts an adaptive updating time step. Performance of the proposed SPFEM for geotechnical problems is first examined by four benchmark numerical examples: (a) bar vibrations, (b) large settlement of strip footing, (c) collapse of aluminium bars column, and (d) failure of a homogeneous soil slope. Finally, the progressive failure of slope of sensitive clay is simulated using the proposed SPFEM to show its outstanding performance in solving large deformation geotechnical problems. All results demonstrate that the novel SPFEM is a powerful and easily extensible numerical method for analysing large deformation problems in geotechnical engineering.

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Dynamic modelling of retrogressive landslides with emphasis on the role of clay sensitivity

Cited by 48 publications

References 44 publications

A State of the Art Review of the Particle Finite Element Method (PFEM)

A State of the Art Review of the Particle Finite Element Method (PFEM)

Shallow landslides modeling using a particle finite element model with emphasis on landslide evolution

An edge‐based strain smoothing particle finite element method for large deformation problems in geotechnical engineering

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