NONCONFORMING MIXED ELEMENTS FOR ELASTICITY

NONCONFORMING MIXED ELEMENTS FOR ELASTICITY
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DOI:
10.1142/s0218202503002507
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发表时间:
2003-03
影响因子:
3.5
通讯作者:
D. Arnold;R. Winther
D. Arnold;R. Winther
中科院分区:
数学1区
文献类型:
--
作者:
D. Arnold;R. Winther

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我们构造了平面弹性的一阶、稳定、非相容混合有限元并分析了它们的收敛性。混合方法基于 Hellinger-Reissner 变分公式,其中应力场和位移场是主要未知数。应力元素使用多项式形状函数,但不涉及顶点自由度。
We construct first-order, stable, nonconforming mixed finite elements for plane elasticity and analyze their convergence. The mixed method is based on the Hellinger–Reissner variational formulation in which the stress and displacement fields are the primary unknowns. The stress elements use polynomial shape functions but do not involve vertex degrees of freedom.