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An a posteriori error estimator is presented which allows a good pointwise evaluation of the error in predicted stresses and can easily be implemented in existing FE codes. Although this estimator has especially been developed for and tested on p ‐version Hybrid‐Trefftz (HT) elements, it is anticipated that it can also be applied to conventional conforming p ‐version elements. The practical efficiency of the estimator is illustrated through the solution of various plate bending problems by using the HT p ‐version Kirchhoff plate elements. 2
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Jiroušek et al. (1989) studied this question.
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