On 10/8/21 2:19 PM, Diego Magela wrote:
Yes, it is right. These are C^1 finite elements.
These elements are difficult to implement. Maybe not for the 1d case, but
certainly for the 2d case. Have you taken a look at the existing step-47 and
the new step-82 (in the dev version)? They show how one can work around the
issues of C^1 elements by using regular Lagrange elements and ensuring C^1
continuity in other ways.
Shell and beam elements have, over the years, fallen out of favor in the
finite element community. That's because they are difficult to implement on
unstructured meshes, and because alternative methods are no worse in accuracy
and cost.
Best
Wolfgang
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Wolfgang Bangerth email: [email protected]
www: http://www.math.colostate.edu/~bangerth/
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