Formulation of a sand plasticity plane-strain model for earthquake engineering applications

Boulanger, Ross W.; Ziotopoulou, Katerina

doi:10.1016/j.soildyn.2013.07.006

Cited by 173 publications

(185 citation statements)

References 22 publications

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“…It is the elasto-plastic, stressratio-controlled, critical state compatible, bounding surface plasticity model originating from the Dafalias-Manzari model Dafalias 1997, Dafalias andManzari 2004) with substantial improvements made by Boulanger (2010) and Ziotopoulou (2012, 2015) at UC Davis and also described in Boulanger and Ziotopoulou (2013), Ziotopoulou and Boulanger (2013), Ziotopoulou (2014).…”

Section: Introductionmentioning

confidence: 99%

“…

ABSTRACTThis paper presents the implementation, validation and application of the PM4Sand model (version 3) formulated by Boulanger and Ziotopoulou (2015) in the PLAXIS finite element code. The model can be used for modelling geotechnical earthquake engineering applications, especially in the case liquefaction is likely to occur.

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mentioning

confidence: 99%

“…The PM4Sand model represents an improvement of the elasto-plastic, stress ratio controlled, bounding surface plasticity model for sands formulated by Dafalias and Manzari (2004). The two-dimensional version has been implemented in PLAXIS and compared to the original implementation by Boulanger and Ziotopoulou (2015). The original implementation has been used in explicit finite difference simulations which can be sensitive to the size of the returned stress increment, based on the chosen time step size and loading rate.…”

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Implementation, Validation, and Application of PM4Sand Model in PLAXIS

Vilhar¹,

Laera²,

Foria³

et al. 2018

Geotechnical Earthquake Engineering and Soil Dynamics V

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This paper presents the implementation, validation and application of the PM4Sand model (version 3) formulated by Boulanger and Ziotopoulou (2015) in the PLAXIS finite element code. The model can be used for modelling geotechnical earthquake engineering applications, especially in the case liquefaction is likely to occur. The PM4Sand model represents an improvement of the elasto-plastic, stress ratio controlled, bounding surface plasticity model for sands formulated by Dafalias and Manzari (2004). The two-dimensional version has been implemented in PLAXIS and compared to the original implementation by Boulanger and Ziotopoulou (2015). The original implementation has been used in explicit finite difference simulations which can be sensitive to the size of the returned stress increment, based on the chosen time step size and loading rate. Therefore, the user needs to evaluate the sensitivity of the solution with respect to the chosen time step sizes. On the contrary, in the finite element method used here, the default time step together with the sub-stepping used at the constitutive model level, provide a robust solution independent of the size of the returned stress increment.

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Section: Introductionmentioning

confidence: 99%

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confidence: 99%

mentioning

confidence: 99%

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Implementation, Validation, and Application of PM4Sand Model in PLAXIS

Vilhar¹,

Laera²,

Foria³

et al. 2018

Geotechnical Earthquake Engineering and Soil Dynamics V

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“…In order to improve the predicted seismic site-response, researchers have proposed PWP generation models (e.g., Vucetic [4], Matasovic [5], Seed et al [7], Martin et al [8], Dobry et al [9,10], Green et al [11], Green [12], Polito et al [13], Ivsic [14]) and effective stress-based soil constitutive models (e.g., Wang et al [15], Elgamal et al [16], Park and Byrne [17], Jefferies and Been [18], Boulanger and Ziotopoulou [19]) that can be used for seismic site-response analysis. For example, Booker et al [20] first proposed an effective stress-based model (named GADFLEA) to study the generation and dissipation of PWP.…”

Section: Introductionmentioning

confidence: 99%

“…The three PWP coupled stress-strain constitutive models evaluated corresponded to the: [16], and • PM4SAND model [19].…”

Section: Introductionmentioning

confidence: 99%

Evaluation of coupled porewater pressure and stress-strain constitutive model in granular soils

Moreno-Torres

Chang-Nieto

Salas-Montoya

2018

DYNA

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The evaluation of performance of three coupled pressure (PWP) generation models and stress-strain constitutive models are applied to granular soils. Those constitutive models are used to recommend them for subsequent application in seismic site-response analysis in effective stresses. The performance of the three-coupled models were evaluated using a database of 25 selected high quality cyclic simple shear tests. The conducted analysis suggested that the simple Coupled GMP and stress-strain constitutive model reasonably capture PWP behavior observed in the laboratory tests, they are analyzed better than using advanced constitutive models, and all of them can be used to perform effective stress-based one-dimensional site-response analysis.Keywords: constitutive models; granular materials; laboratory tests; seismic site-response analysis.Evaluación de modelos constitutivos esfuerzo-deformación acoplados con presión de poros en suelos granulares ResumenEn el presente artículo se evaluó el desempeño de tres modelos constitutivos esfuerzo-deformación acoplados con presión de poros a suelos granulares con el objetivo de recomendar su posterior aplicación en el análisis sísmico de respuesta de sitio. El desempeño de los tres modelos acoplados se evaluó utilizando una base de datos de 25 ensayos de corte simple cíclico de alta calidad. Los análisis realizados sugieren que el modelo acoplado de esfuerzo-deformación y GMP captura razonablemente el comportamiento de presión de poros observado en los ensayos de laboratorio de una mejor manera que los modelos constitutivos más avanzados y todos ellos se pueden utilizar para realizar análisis unidimensional de respuesta de sitio considerando esfuerzos efectivos.Palabras clave: análisis sísmico de respuesta de sitio; ensayos de laboratorio; materiales granulares; modelos constitutivos,

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Über ein elastoplastisches Stoffgesetz für zyklisch beanspruchten Sand

2017

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Die numerische Simulation aktueller Problemstellungen in der Geotechnik erfordert Stoffgesetze, die das Spannungs‐Dehnungsverhalten von Sand realitätsnah beschreiben. In Bezug auf monotone Lasten sind mit bestehenden Modellierungsansätzen bereits sehr gute Ergebnisse zu erzielen. Das Materialverhalten bei zyklischer Beanspruchung ist jedoch außerordentlich komplex. Selbst die derzeit leistungsfähigsten Stoffgesetze können nur einzelne Aspekte abbilden. Daher ist weitere Forschungsarbeit dringend erforderlich. Vor diesem Hintergrund stellt der Beitrag ein Stoffgesetz für Sand vor, das auf der Grenzflächenplastizität sowie dem Konzept kritischer Zustände basiert. Es kann das Verhalten des Bodens für komplexe zyklische Belastungspfade über eine breite Spanne von Dichte‐ und Spannungszuständen mit einem einzigen Parametersatz abbilden. Die Funktionsweise des Stoffgesetzes wird im Beitrag konzeptionell dargestellt. Die Ergebnisse der numerischen Simulation zyklischer undränierter Triaxialversuche werden den Ergebnissen entsprechender Laborversuche gegenübergestellt. Der Vergleich liefert eine gute Übereinstimmung. Die Eignung des Stoffgesetzes für den Einsatz in komplexen numerischen Simulationen wird anhand eines Berechnungsbeispiels gezeigt. Hierfür wurde ein Staudamm gewählt, der durch einen Erdbebenzeitverlauf an der Basis angeregt wird. Abschließend werden im Beitrag Ansätze zur Weiterentwicklung des Stoffgesetzes aufgezeigt.

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Formulation of a sand plasticity plane-strain model for earthquake engineering applications

Cited by 173 publications

References 22 publications

Implementation, Validation, and Application of PM4Sand Model in PLAXIS

Implementation, Validation, and Application of PM4Sand Model in PLAXIS

Evaluation of coupled porewater pressure and stress-strain constitutive model in granular soils

Über ein elastoplastisches Stoffgesetz für zyklisch beanspruchten Sand

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