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Triangular elements are stiff?

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Old   September 8, 2000, 03:19
Default Triangular elements are stiff?
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I've heard a rumor that triangular elements are "stiff", which seems to be a trouble but a famous fact in FEM for solid mechanics. I'm not familiar with FEM. So, I don't understand what this means. Anyone can explain it to me? Or any references that deal with it?

And, is it a problem also in CFD?


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