Abstract
This paper is intended to show that the non-conforming element by Wilson[3] et al. and the hybrid stress element by Pian[2] are equivalent.
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References
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Pian, T.HH. On the equivalence of non-conforming element and hybrid stress element. Appl Math Mech 3, 773–776 (1982). https://doi.org/10.1007/BF01895331
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DOI: https://doi.org/10.1007/BF01895331