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Peak Stress Obliquity in Drained and Undrained Sands. Simulations with Neohypoplasticity

Niemunis, Andrzej / Tavera, Carlos E. Grandas / Wichtmann, Torsten

Abstract The difference between undrained and drained peak friction angle is considerable (up tp $10^{\circ}$ ), despite identical densities and pressures (at peak). This cannot be explained using the elastoplastic formalism. An attempt is made to describe this effect with neohypoplasticity. For this purpose two types of nonlinearity are used, the well-known term $Y m_{i j} ‖ \dot{ϵ} ‖$ and the novel skew-symmetric correction tensor which is added to the elastic stiffness.

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Peak Stress Obliquity in Drained and Undrained Sands. Simulations with Neohypoplasticity

Niemunis, Andrzej / Tavera, Carlos E. Grandas / Wichtmann, Torsten

Abstract The difference between undrained and drained peak friction angle is considerable (up tp $10^{\circ}$ ), despite identical densities and pressures (at peak). This cannot be explained using the elastoplastic formalism. An attempt is made to describe this effect with neohypoplasticity. For this purpose two types of nonlinearity are used, the well-known term $Y m_{i j} ‖ \dot{ϵ} ‖$ and the novel skew-symmetric correction tensor which is added to the elastic stiffness.

Peak Stress Obliquity in Drained and Undrained Sands. Simulations with Neohypoplasticity

Niemunis, Andrzej / Tavera, Carlos E. Grandas / Wichtmann, Torsten

Abstract The difference between undrained and drained peak friction angle is considerable (up tp $10^{\circ}$ ), despite identical densities and pressures (at peak). This cannot be explained using the elastoplastic formalism. An attempt is made to describe this effect with neohypoplasticity. For this purpose two types of nonlinearity are used, the well-known term $Y m_{i j} ‖ \dot{ϵ} ‖$ and the novel skew-symmetric correction tensor which is added to the elastic stiffness.

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Titel:

Peak Stress Obliquity in Drained and Undrained Sands. Simulations with Neohypoplasticity

Beteiligte:

Niemunis, Andrzej (Autor:in) / Tavera, Carlos E. Grandas (Autor:in) / Wichtmann, Torsten (Autor:in)

Erschienen in:

Holistic Simulation of Geotechnical Installation Processes ; 85-114

Lecture Notes in Applied and Computational Mechanics ; 80

Erscheinungsdatum:

29.10.2015

Format / Umfang:

30 pages

ISBN:

978-3-319-23158-7 , 978-3-319-23159-4

ISSN:

1613-7736 , 1860-0816

DOI:

https://doi.org/10.1007/978-3-319-23159-4_5

Medientyp:

Aufsatz/Kapitel (Buch)

Format:

Elektronische Ressource

Sprache:

Englisch

Schlagwörter:

Constitutive modelling , Sand , Dilatancy , Peak friction angle , Cyclic mobility Engineering , Geoengineering, Foundations, Hydraulics , Geotechnical Engineering & Applied Earth Sciences , Continuum Mechanics and Mechanics of Materials

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