LS-DYNA Mitral Valve Modeling Help

[Justin O]

Hello everyone,

I am a masters student tasked with simulating heart valves in LS-DYNA, and from my research I believe a simulation using ALE elements and FSI coupling has been proven to be the best for this application.

From all of the resources I have found online, I have a decent mesh assembled and I can assign initial velocities to the leaflets which move the way they are supposed to, indicating the basic set up and boundary conditions of the model is working correctly. However, I still have much to correct on my model to accurately represent a heart valve.

How/can I implement a velocity inlet waveform on one side of my model and a pressure output on the other? I would like to input the normal pressure experienced by a heart valve over a cardiac cycle.

How do I fine tune the ALE and FSI settings? I have found very few resources online to learn advanced techniques using these, and all the resources I have found have little to no description of WHY certain cards were implemented. Any teaching resources would be greatly appreciated.

Thanks,
Justin
Clemson University Mechanical Engineering

 

[IceBreakerSours]

Fastest/easiest route: Talk to LSTC.

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[DrBwts]

Why not a pressure input?

 

[rstupplebeen]

There is a bunch of great information on the Living Heart Project which is done in Abaqus however I suspect that some of the techniques can be transfered to LS-DYNA.

https://www.3ds.com/products-services/simulia/solutions/life-sciences/the-living-heart-project

I hope this helps.
Rob

Rob Stupplebeen
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