The biomedical application of maxillo-facial morphometric analysis can be cited as an important application of the present methodology. The idea is now being utilized for general three-dimensional cases. For the unconventional concave quadrilateral finite element, the proposed formulation made it possible to generate all shape functions starting from the one which pertains to the concave node.
To our knowledge there is neither any published work nor any hint that the shape functions for elements can be generated from
a single one by satisfying (desirable) interpolation conditions. Perhaps no investigator other than Wachspress could conceive
the shape functions in the
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