Enhanced assumed strain elements and locking in membrane problems
作者： Dietrich Braess
DOI: 10.1016/S0045-7825(98)00037-1
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摘要: Abstract The assumptions which guarantee convergence of EAS elements first introduced by Simo and Rifai, can be reduced to two postulates. Specifically, the stability condition refers a relaxed an associated Hu-Washizu principle. We investigate problem volume locking membrane problems. Estimates certain type for instance imply Q1-element, are fortunately not present with elements. Finally we verify equivalence concept Hellinger-Reissner method was observed in numerical computations Andelfinger Ramm.
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