Strategies to Apply Soil Models Directly as Friction Laws in Soil Structure Interactions

authored by: Christian Weißenfels, Ajay B. Harish, Peter Wriggers
Abstract: In this work three different concepts for a direct application of soil models within a frictional contact description are presented. These concepts can be used in conjunction with all different kinds of contact formulations and solution methods. Additionally, all types of plasticity models can be used within these formulations. The advantage of these concepts is shown exemplary in the modeling process of soil-structure interactions where the Ehlers plasticity model for the continuum is now able to describe the soil behavior at the contact surface. The numerical implementation of the new frictional relations is based on the Mortar method and the numerical investigation of a direct shear test shows the reproduction of the typical stress-strain relation of the soil at the contact surface. The work ends with a critical discussion about the different friction formulations and the application of the Ehlers soil model in a direct shear test.
Organisation(s): Institute of Continuum Mechanics
Type: Article
Journal: Lecture Notes in Applied and Computational Mechanics (Print)
Volume: 82
Pages: 216-236
No. of pages: 21
ISSN: 1613-7736
Publication date: 26.01.2017
Publication status: Published
Peer reviewed: Yes
ASJC Scopus subject areas: Mechanical Engineering, Computational Theory and Mathematics
Electronic version(s): https://doi.org/10.1007/978-3-319-52590-7_9 (Access: Closed)
: Details in the research portal "Research@Leibniz University"

BibTeX

@article{52008a2c34944cc9a9d54bcd968ea774,
title = "Strategies to Apply Soil Models Directly as Friction Laws in Soil Structure Interactions",
abstract = "In this work three different concepts for a direct application of soil models within a frictional contact description are presented. These concepts can be used in conjunction with all different kinds of contact formulations and solution methods. Additionally, all types of plasticity models can be used within these formulations. The advantage of these concepts is shown exemplary in the modeling process of soil-structure interactions where the Ehlers plasticity model for the continuum is now able to describe the soil behavior at the contact surface. The numerical implementation of the new frictional relations is based on the Mortar method and the numerical investigation of a direct shear test shows the reproduction of the typical stress-strain relation of the soil at the contact surface. The work ends with a critical discussion about the different friction formulations and the application of the Ehlers soil model in a direct shear test.",
keywords = "Contact layer, Contact mechanics, Finite element method, Friction laws, Mortar method, Projection strategies, Soil mechanics, Soil-structure interactions",
author = "Christian Wei{\ss}enfels and Harish, {Ajay B.} and Peter Wriggers",
note = "Funding information: This research project is supported by the Deutsche For-schungsgemeinschaft (German Research Foundation) within the research unit 1136: Simulation of Geotechnical Construction Processes with Holistic Consideration of Constitutive Laws in Soils.",
year = "2017",
month = jan,
day = "26",
doi = "10.1007/978-3-319-52590-7_9",
language = "English",
volume = "82",
pages = "216--236",
journal = "Lecture Notes in Applied and Computational Mechanics (Print)",
issn = "1613-7736",
publisher = "Springer Verlag",
}