【摘要】 <正> 1 引言 近年来,许多人对近不可压缩材料弹性问题的混合有限元方法进行了深入的研究,其中文[9]中讨论了一类包含位移、增广应力(augment stress)和压力等三种变量的混合有限元公式.研究这种方法的好处在于:人们可以直接求解工程上最感兴趣的应力变量.不幸的是,由于相应的有限元公式有着“鞍点结构”,根据Brezzi和Babuska的理论,当位移、应力和压力有限元空间满足“BB条件”时,方能证明有限元解的存在唯一性,而这一严格的条件更多还原

【Abstract】 In this paper, We present a posteriori error estimator of the stabilized finite element method, which was given in [1], for three-fields model of elasticity problem. This estimator is based on a suitable local evaluation of the residual of the solution with respect to the strong form of the differential equation. We have proven that this, estimator yields globel upper and local lower bounds for the true error of the computed solution.更多还原