Transient large strain contact modelling: A comparison of contact techniques for simultaneous fluid–structure interaction

Daniel M. Espino; Duncan E.t. Shepherd; David W.l. Hukins

doi:10.1016/j.euromechflu.2015.01.006

Transient large strain contact modelling: A comparison of contact techniques for simultaneous fluid–structure interaction

Daniel M. Espino, Duncan E.t. Shepherd, David W.l. Hukins

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Abstract

Contact between two deformable structures, driven by applied fluid-pressure, is compared for an existing pseudo-transient contact method (the default in the Comsol Multi-physics v3.3 software package) and a new transient method. Application of the new method enables time-dependent and simultaneous Fluid–Structure Interaction (FSI) simulations to be solved. The new method is based on Hertzian contact. It enables truly transient simulations, unlike the default contact method. Both the default and new methods were implemented using a moving Arbitrary-Lagrange–Euler mesh, along with velocity constraints and Lagrange Multipliers to enable simultaneous FSI simulations. The comparison was based on a simple two-dimensional model developed to help understand the opening of a heart valve. The results from the new method were consistent with the steady-state solutions achieved using the default contact method. However, some minor differences in fluid dynamics, structural deformation and contact pressure predicted were obtained. The new contact method developed for FSI simulations enables transient analysis, in contrast to the default contact method that enables steady state solutions only.

Original language	English
Pages (from-to)	54-60
Journal	European Journal of Mechanics B - Fluids
Volume	51
Early online date	29 Jan 2015
DOIs	https://doi.org/10.1016/j.euromechflu.2015.01.006
Publication status	Published - 1 May 2015

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10.1016/j.euromechflu.2015.01.006

Espino_Transient_large_strain_contact_modelling_European_Journal_Mechanics_B_Fluids_2015
NOTICE: this is the author’s version of a work that was accepted for publication in European Journal of Mechanics - B/Fluids. Changes resulting from the publishing process, such as peer review, editing, corrections, structural formatting, and other quality control mechanisms may not be reflected in this document. Changes may have been made to this work since it was submitted for publication. A definitive version was subsequently published in European Journal of Mechanics - B/Fluids, Vol 51, May-June 2015, DOI: 10.1016/j.euromechflu.2015.01.006. Eligibility for repository checked March 2015
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Cite this

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title = "Transient large strain contact modelling: A comparison of contact techniques for simultaneous fluid–structure interaction",

abstract = "Contact between two deformable structures, driven by applied fluid-pressure, is compared for an existing pseudo-transient contact method (the default in the Comsol Multi-physics v3.3 software package) and a new transient method. Application of the new method enables time-dependent and simultaneous Fluid–Structure Interaction (FSI) simulations to be solved. The new method is based on Hertzian contact. It enables truly transient simulations, unlike the default contact method. Both the default and new methods were implemented using a moving Arbitrary-Lagrange–Euler mesh, along with velocity constraints and Lagrange Multipliers to enable simultaneous FSI simulations. The comparison was based on a simple two-dimensional model developed to help understand the opening of a heart valve. The results from the new method were consistent with the steady-state solutions achieved using the default contact method. However, some minor differences in fluid dynamics, structural deformation and contact pressure predicted were obtained. The new contact method developed for FSI simulations enables transient analysis, in contrast to the default contact method that enables steady state solutions only.",

author = "Espino, {Daniel M.} and Shepherd, {Duncan E.t.} and Hukins, {David W.l.}",

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AU - Espino, Daniel M.

AU - Shepherd, Duncan E.t.

AU - Hukins, David W.l.

PY - 2015/5/1

Y1 - 2015/5/1

N2 - Contact between two deformable structures, driven by applied fluid-pressure, is compared for an existing pseudo-transient contact method (the default in the Comsol Multi-physics v3.3 software package) and a new transient method. Application of the new method enables time-dependent and simultaneous Fluid–Structure Interaction (FSI) simulations to be solved. The new method is based on Hertzian contact. It enables truly transient simulations, unlike the default contact method. Both the default and new methods were implemented using a moving Arbitrary-Lagrange–Euler mesh, along with velocity constraints and Lagrange Multipliers to enable simultaneous FSI simulations. The comparison was based on a simple two-dimensional model developed to help understand the opening of a heart valve. The results from the new method were consistent with the steady-state solutions achieved using the default contact method. However, some minor differences in fluid dynamics, structural deformation and contact pressure predicted were obtained. The new contact method developed for FSI simulations enables transient analysis, in contrast to the default contact method that enables steady state solutions only.

AB - Contact between two deformable structures, driven by applied fluid-pressure, is compared for an existing pseudo-transient contact method (the default in the Comsol Multi-physics v3.3 software package) and a new transient method. Application of the new method enables time-dependent and simultaneous Fluid–Structure Interaction (FSI) simulations to be solved. The new method is based on Hertzian contact. It enables truly transient simulations, unlike the default contact method. Both the default and new methods were implemented using a moving Arbitrary-Lagrange–Euler mesh, along with velocity constraints and Lagrange Multipliers to enable simultaneous FSI simulations. The comparison was based on a simple two-dimensional model developed to help understand the opening of a heart valve. The results from the new method were consistent with the steady-state solutions achieved using the default contact method. However, some minor differences in fluid dynamics, structural deformation and contact pressure predicted were obtained. The new contact method developed for FSI simulations enables transient analysis, in contrast to the default contact method that enables steady state solutions only.

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JO - European Journal of Mechanics B - Fluids

JF - European Journal of Mechanics B - Fluids

ER -

Transient large strain contact modelling: A comparison of contact techniques for simultaneous fluid–structure interaction

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