Modelling FSI biomechanics

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Pugaz GM

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Mar 8, 2021, 4:09:52 PM3/8/21
to LS-DYNA2
As I am beginner for FSI Fluid Structural Interaction, I would like to receive material/ guidance for the research.
1. Codes for adopter LS Dyna and Open-Foam
2. Biomechanical Fluid material definition
3. Modelling Shell and Solid MAT as fluid
4. Any tutorial or material to to take on Biomechanical Application 

Thanks in advance 
with Respect and Love   
Pugazhenthi SK
Asst Prof. VIT

Shahrul Hisyam Marwan

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Mar 8, 2021, 10:00:46 PM3/8/21
to Pugaz GM, LS-DYNA2
Dear Mr Pugaz GM,

Maybe this website will give you some idea.




Hopefully will help you.

Warm Regards,
Shahrul Hisyam Marwan

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James M. Kennedy

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Mar 9, 2021, 1:25:23 PM3/9/21
to Pugaz GM, LS-DYNA2

Dear Pugaz,

 

Three numerical models were established in LS‐DYNA, using either Mat_Elastic_Fluid, Mat_Null

with an Equation of State, and Mat_ALE_Incompressible_Fluid for describing the CSF. For a fair

comparison, an Arbitrary Lagrangian Eulerian (ALE) discretization was used for all models:

 

Klug, C., Sinz, W., Brenn, G., and Feist, F., “Experimental Sphere‐in‐Sphere Testing for the Valid-

ation of a Numerical Cerebrospinal Fluid Model”, Paper IRC-13-53, 2013 International Research

Council on the Biomechanics of Injury (IRCOBI) Conference, Gothenburg, Sweden, September,

2013.

 

http://www.ircobi.org/wordpress/downloads/irc13/pdf_files/53.pdf

 

The computation of fluid forces acting on a rigid or deformable structure constitutes a major problem

in fluid- structure interaction. However, the majority of numerical tests consists in using two different

codes to separately solve pressure of the fluid and structural displacements. In this paper, a monolithic

with an ALE formulation approach was used to implicitly calculate the pressure of an incompressible

fluid applied to the structure. The projection method proposed by Gresho was used to decouple the

velocity and pressure:

 

Aquelet, N., and Souli, M., "ALE Incompressible Fluid in LS-DYNA", 9th European LS-DYNA

Users Conference, Manchester, United Kingdom, May, 2013.

http://www.dynalook.com/9th-european-ls-dyna-conference/ale-incompressible-fluid-in-ls-dyna

The computation of fluid forces acting on a rigid or deformable structure constitutes a major problem

in fluid- structure interaction. However, the majority of numerical tests consists in using two different

codes to separately solve pressure of the fluid and structural displacements. In this paper, a monolithic

with an ALE formulation approach was used to implicitly calculate the pressure of an incompressible

fluid applied to the structure. The projection method proposed by Gresho was used to decouple the

velocity and pressure:


Aquelet, N., and Souli, M., "ALE Incompressible Fluid in LS-DYNA", 12th International LS-DYNA

Users Conference, Dearborn, Michigan, June, 2012.

http://www.dynalook.com/international-conf-2012/fsi-ale23-e.pdf

The computation of fluid forces acting on a rigid or deformable structure constitutes a major problem

in fluid- structure interaction. However, the majority of numerical tests consists in using two different

codes to separately solve pressure of the fluid and structural displacements. In this paper, a monolithic

with an ALE formulation approach was used to implicitly calculate the pressure of an incompressible

fluid applied to the structure. The projection method proposed by Gresho was used to decouple the

velocity and pressure:

 

Souli, M., "ALE Incompressible Fluid in LS-DYNA", 11th International LS-DYNA  Users Conference,

Dearborn, Michigan, June, 2010.

http://www.dynalook.com/international-conf-2010/FluidFSI-5.pdf

 

---------------------------------

 

ALE and FSI

 

In this seminar, you receive comprehensive information directly from one of the program developers

about the latest developments of the features provided by the solver LS-DYNA to analyse fluids and,

in particular, the fluid-structure interaction using its Arbitrary Lagrangian Eulerian (ALE) capabilities.

 

https://www.dynamore.de/en/training/seminars/multiphysics-biomechanics/ale-and-fsi

 

---------------------------------

 

Sincerely,

James M. Kennedy

KBS2 Inc.

March 9, 2021

 

 

--

James M. Kennedy

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Mar 9, 2021, 5:32:45 PM3/9/21
to Pugaz GM, LS-DYNA2

Dear Pugaz,

 

------------------

 

Some simple introductory examples regarding FSI.

 

FSI

 

A bar impacts a water surface. The coupling of this model is simulated in different quadrature points.

 

https://www.dynaexamples.com/ale/fsi

 

Krebs, J., "Modeling Explosions Using LS-PrePost's ALE Module: LS-DYNA ALE/FSI Tutorial", Livermore Software Technology Corporation, Livermore, California, February, 2010.

 

ftp://ftp.lstc.com/outgoing/jacob/PDF/LS-PrePost_ALE_Module_022510.pdf

 

------------------

 

A very nice feature of the S-ALE modeling, especially when making mesh discretization comparison studies, is that one can modify the S-ALE model (wavehitcol.k) below by making a simple parameter change (node numbering) in the three *ALE_STRUCTURED_MESH_CONTROL_POINTS keyword entries.

 

------------------

 

ALE (standard) - Intermediate example presentation

 

https://www.dynaexamples.com/ale/intermediate-example

 

Intermediate : Wave-Structure Interaction

 

A container is partially filled with water subjected to gravity. As the wave propagates, it hits a rigid column placed roughly in the middle of the container. This model was developed to make/allow comparisons with an available S-ALE model. To make a direct comparison, using identical cell discretization (0.010 meters) one can modify the S-ALE model (wavehitcol.k) below by making a simple parameter change (node numbering) in the three *ALE_STRUCTURED_MESH_CONTROL_POINTS keyword entries.

 

Roughly 330,000 elements are in the ALE and S-ALE models with a cell discretization of 0.010 meters (m), while roughly 2,590,000 elements are in the S-ALE model (wavehitcol.k) with a  cell discretization of 0.005 meters (m).

 

The Murnaghan equation of state has become available as a new keyword: *EOS_MURNAGHAN. This equation of state can be used to enforce quasi-static incompressibility while allowing for a reasonable time step in explicit calculations.  Any ALE model part is there- fore represented by a *MAT_NULL card, describing the density and viscosity of the material, and an *EOS_MURNAGHAN card, describing the pressure-density relationship.

 

-----------------

 

S-ALE - Intermediate example presentation

 

http://ftp.lstc.com/anonymous/outgoing/hao/sale/models/wavehitcol/

 

Intermediate : Wave-Structure Interaction

 

A container is partially filled with water subjected to gravity. As the wave propagates, it hits a rigid column placed roughly in the middle of the container. The total contact forces are recorded for the entire simulation, and compared to experimental data [1].

 

[1} Gomez-Gesteira, M., Crespo, A.J.C., Rogers, B.D. Dalrymple, R.A., Dominguez, J.M. and Barreiro, A., “SPHysics - Development of a Free-Surface Fluid Solver - Part 2: Efficiency and Test Cases,” Computers & Geosciences, Vol. 48, pp. 300–307, November, 2012.

 

https://www.sciencedirect.com/science/article/pii/S0098300412000842

 

[2] Chen, H., "LS-DYNA Structured ALE (S-ALE) Solver", 14th International LS-DYNA Users Conference, Dearborn, Michigan, June, 2016.

 

http://www.dynalook.com/14th-international-ls-dyna-conference/simulation/ls-dyna-r-structured-ale-s-ale-solver

 

[3] Chen, H, and Do, I., "Recent Developments in LS-DYNA S-ALE", 15th International LS-DYNA Users Conference, Dearborn, Michigan, June, 2018.

 

https://www.dynalook.com/15th-international-ls-dyna-conference/fsi-ale/recent-developments-in-ls-dyna-r-s-ale

James M. Kennedy

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Mar 9, 2021, 6:12:39 PM3/9/21
to Pugaz GM, LS-DYNA2

Dear Pugaz,

 

Luraghi, G., Migliavacca, F., and Matas, J.R.R. "Study on the Accuracy of Structural and FSI Hear Valves Simulations", Cardiovascular Engineering and Technology, Vol. 9, Issue 4, pp. 723-738, December, 2018.

 

https://link.springer.com/article/10.1007%2Fs13239-018-00373-3

 

Luraghi, G., Migliavacca, F., and Matas, J.R.R. "The Effect of Element Formulation on FSI Heart Valve Simulations", 12th European LS-DYNA Users Conference, Koblenz, Germany, May, 2019.

 

https://www.dynalook.com/conferences/12th-european-ls-dyna-conference-2019/human-models-and-mathematical-models/luraghi_politecnico_di_milano.pdf

 

----------------------------

 

https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5473331/

 

https://www.youtube.com/watch?v=rKGpu-3vLIQ

 

https://www.sciencedirect.com/science/article/pii/S1350453310001505

 

----------------------------

 

Sincerely,

James M. Kennedy

KBS2 Inc.

March 9, 2021

 

From: James M. Kennedy [mailto:j...@kbs2.com]
Sent: Tuesday, March 09, 2021 4:33 PM
To: 'Pugaz GM' <puga...@gmail.com>; 'LS-DYNA2' <ls-d...@googlegroups.com>
Subject: RE: [LS-DYNA2] Modelling FSI biomechanics

 

Dear Pugaz,

 

------------------

[3] Chen, H, and Do, I., "Recent Developments in LS-DYNA S-ALE", 15th International LS-DYNA Users Conference, Dearborn, Michigan, June, 2018.

 

https://www.dynalook.com/15th-international-ls-dyna-conference/fsi-ale/recent-developments-in-ls-dyna-r-s-ale

 

-------------------

 

Sincerely,

James M. Kennedy

KBS2 Inc.

March 9, 2021

 

 

From: ls-d...@googlegroups.com [mailto:ls-d...@googlegroups.com] On Behalf Of James M. Kennedy


Sent: Tuesday, March 09, 2021 12:25 PM
To: 'Pugaz GM' <


Subject: RE: [LS-DYNA2] Modelling FSI biomechanics

 

Dear Pugaz,

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