【摘要】 研究在各向异性条件下的二阶椭圆问题,针对非协调有限元方法,改变在计算荷载向量时用到的数值积分方案,亦即改变离散格式,在较弱条件f∈H1(Ω)∩C0(Ω)下,仍能得到与传统有限元分析相同的收敛阶O(h)。更多还原

【Abstract】 In this paper, we deal with the second order elliptic problem and focus on the anisotropic nonconforming finite element. By means of modifying the numerical integration method used in the computation of load vectors,i.e. changing the discrete form,the same convergent order O(h) as that of the conventional finite element is obtained with the weaker condition f∈H~1(Ω)∩C~0(Ω).更多还原