Abstract
In this paper, the explicit forms of field functions in tetrehedron elements with 16 and 20 degrees of freedom are given in terms of volume coordinatesL 1,L 2,L 3,L 4 of tetrahedron.
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Wei-zang, C. The explicit forms of field functions in totrahedron element with 16 and 20 degrees of freedom. Appl Math Mech 1, 159–164 (1980). https://doi.org/10.1007/BF01876741
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DOI: https://doi.org/10.1007/BF01876741