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Near-incompressible analysis
Tue, 2009-02-17 19:33 - Alejandro Ortiz...
Hello all,
I am studying some simple finite elements for 2d near-incompressible analysis. Particularly, I am interested in the MINI element. It is basically a 3-node triangle element with nodal pressure and displacement degree of freedoms enriched by a bubble function. Could someone that has some experience with these elements point me out about advantages and drawbacks of using these type of elements?
Thanks,
Alejandro.
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Hi Alex, You could be
Hi Alex,
You could be interested in NICE elements (Nodal Intergation Continuum Elements) developped by Krisl and his co-workers published in IJNME.
By the way, your problem is geometrically linear or nonlinear?
Phu
Re: Hi Alex, You could be
Hello Phu,
For now it is just linear. Thanks, I have the paper you mention. Just I would like to survey the element that seems to be the simplest one, the MINI element. In the book "Finite elements for flow problems" by Donea and Huerta, a poor pressure approximation is reported for the 3D version of this element. I would like to know if the same applies for the 2D version.
Alejandro.