On 6/11/21 4:04 AM, Alex Cumberworth wrote:
To answer the question I posed, I did some more tests and found that refining
in the width and height of the beam has no effect on the convergence of the
shear force. I went down to just a single division in z and 2 in y (in other
words there are just two faces when looking down the end of the beam), and
could get the same level of agreement with beam theory with one order of
magnitude fewer degrees of freedom. I guess I am still mildly surprised how
refined I had to made the x direction, but perhaps if I also used adaptive
refinement things would further improve.
You might also want to try quadratic or cubic elements. For smooth solutions,
that often does wonders!
Best
W>
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Wolfgang Bangerth email: bange...@colostate.edu
www: http://www.math.colostate.edu/~bangerth/
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