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The numerical experiments were made with a code built with MATLAB. The errors
were measured with the classical and norms, for 100 different
positions of the front linearly spaced in the element.
Figure:
The different enrichment compared with norm.
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Figure:
The different enrichment compared with norm.
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We can note that the best results are obtained with the Heavyside function,
even if the ``classical shape'' is very close.
Renaud Merle
2000-08-26