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3D zero-thickness coupled interface finite element

3D zero-thickness coupled interface finite element
3D zero-thickness coupled interface finite element
In many fields of geotechnical engineering, the modelling of interfaces requires special numerical tools. This paper presents the formulation of a 3D fully coupled hydro-mechanical finite element of interface. The element belongs to the zero-thickness family and the contact constraint is enforced by the penalty method. Fluid flow is discretised through a three-node scheme, discretising the inner flow by additional nodes. The element is able to reproduce the contact/loss of contact between two solids as well as shearing/sliding of the interface. Fluid flow through and across the interface can be modelled. Opening of a gap within the interface influences the longitudinal transmissivity as well as the storage of water inside the interface. Moreover the computation of an effective pressure within the interface, according to the Terzaghi’s principle creates an additional hydro-mechanical coupling. The uplifting simulation of a suction caisson embedded in a soil layer illustrates the main features of the element. Friction is progressively mobilised along the shaft of the caisson and sliding finally takes place. A gap is created below the top of the caisson and filled with water. It illustrates the storage capacity within the interface and the transversal flow. Longitudinal fluid flow is highlighted between the shaft of the caisson and the soil. The fluid flow depends on the opening of the gap and is related to the cubic law.
Contact mechanics, Interfaces, Finite elements, Offshore engineering, Hydro-mechanical couplings
0266-352X
124-140
Cerfontaine, Benjamin
0730daf4-9d6b-4f2d-a848-a3fc54505a02
Dieudonné, Anne-Catherine
8cdf85bd-11ef-4dd7-b955-145c0d3efc83
Radu, Jean-Pol
793d9b16-4ad2-477a-a0e2-064a1489bc70
Collin, Frédéric
27fa6a2d-f8e2-473f-a3b2-070eca6a9c3a
Charlier, Robert
3bba8221-b05d-431a-8a41-40f1b5dcc7e8
Cerfontaine, Benjamin
0730daf4-9d6b-4f2d-a848-a3fc54505a02
Dieudonné, Anne-Catherine
8cdf85bd-11ef-4dd7-b955-145c0d3efc83
Radu, Jean-Pol
793d9b16-4ad2-477a-a0e2-064a1489bc70
Collin, Frédéric
27fa6a2d-f8e2-473f-a3b2-070eca6a9c3a
Charlier, Robert
3bba8221-b05d-431a-8a41-40f1b5dcc7e8

Cerfontaine, Benjamin, Dieudonné, Anne-Catherine, Radu, Jean-Pol, Collin, Frédéric and Charlier, Robert (2015) 3D zero-thickness coupled interface finite element. Computers and Geotechnics, 69, 124-140. (doi:10.1016/j.compgeo.2015.04.016).

Record type: Article

Abstract

In many fields of geotechnical engineering, the modelling of interfaces requires special numerical tools. This paper presents the formulation of a 3D fully coupled hydro-mechanical finite element of interface. The element belongs to the zero-thickness family and the contact constraint is enforced by the penalty method. Fluid flow is discretised through a three-node scheme, discretising the inner flow by additional nodes. The element is able to reproduce the contact/loss of contact between two solids as well as shearing/sliding of the interface. Fluid flow through and across the interface can be modelled. Opening of a gap within the interface influences the longitudinal transmissivity as well as the storage of water inside the interface. Moreover the computation of an effective pressure within the interface, according to the Terzaghi’s principle creates an additional hydro-mechanical coupling. The uplifting simulation of a suction caisson embedded in a soil layer illustrates the main features of the element. Friction is progressively mobilised along the shaft of the caisson and sliding finally takes place. A gap is created below the top of the caisson and filled with water. It illustrates the storage capacity within the interface and the transversal flow. Longitudinal fluid flow is highlighted between the shaft of the caisson and the soil. The fluid flow depends on the opening of the gap and is related to the cubic law.

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More information

Accepted/In Press date: 18 April 2015
e-pub ahead of print date: 26 May 2015
Published date: September 2015
Keywords: Contact mechanics, Interfaces, Finite elements, Offshore engineering, Hydro-mechanical couplings

Identifiers

Local EPrints ID: 444203
URI: http://eprints.soton.ac.uk/id/eprint/444203
ISSN: 0266-352X
PURE UUID: cd5e7298-3074-42a7-880b-0efa7196658e
ORCID for Benjamin Cerfontaine: ORCID iD orcid.org/0000-0002-4833-9412

Catalogue record

Date deposited: 01 Oct 2020 16:34
Last modified: 02 Oct 2020 01:53

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Contributors

Author: Anne-Catherine Dieudonné
Author: Jean-Pol Radu
Author: Frédéric Collin
Author: Robert Charlier

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