Constant cavity volume

[CrazyMesh]

Dear all,

I am trying to simulate cardiac contraction for a left ventricle. I want have to keep the cavity volume constant for my simulation.
I have read alot of documentations for tyre simulation in abaqus where they give a constant volume for internal air part but no success to find inp example to understand how you can give such boundary conditions.

Anyone can give me some hints where can I find such info?
Any help is very welcomed,

 

[rstupplebeen]

I suggest looking into 'the living heart project' that Abaqus has been working on with industry, academia and the FDA. Below is a link but I'm sure a google search will bring up many more.

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

I hope this helps.


Rob Stupplebeen

http://www.optimaldevice.com

https://sites.google.com/site/robertkstupplebeen/

 

[CrazyMesh]

Thanks alot!
I am going to check it out! for now I had a look on the boundary condition fluid cavity to see if I can consider a fluid inside without adding a new mesh.

Regards

 

[rstupplebeen]

For fluid cavities you do not need to define a new mesh but you do need to define a closed volume for the blood. I hope this helps.

Rob Stupplebeen

http://www.optimaldevice.com

https://sites.google.com/site/robertkstupplebeen/

 

[CrazyMesh]

Thank you very much,
I have a complicated mesh(hexahedron). For now, I am trying to figure how I can close my surface directly in abaqus.

Regards,

 

[IceBreakerSours]

Do you really want to keep the fluid volume inside the ventricle constant? That would induce very high pressures on the ventricular musculature, wouldn't it? What sort of disease condition will cause such a phenomenon to occur? This is interesting!

Are you new to this forum? If so, please read these FAQ:

http://www.eng-tips.com/faqs.cfm?fid=376

http://www.eng-tips.com/faqs.cfm?fid=1083

 

[CrazyMesh]

Dear Icebreaker!

The phase I am trying to simulate is called isovolumic contraction, means the moment where the valves are closed and the muscle contraction starts to a certain stress. When the pressure inside the ventricle reaches to about 10kPa valves open and contraction continues more strong to reach 16kPa.
Thats what I am trying to do but I cant close my mesh while it was empty (the cavity) from beginning.