New hybridized mixed methods for linear elasticity and optimal multilevel solvers
Numerische Mathematik(2018)
摘要
In this paper, we present a family of new mixed finite element methods for linear elasticity for both spatial dimensions n=2,3 , which yields a conforming and strongly symmetric approximation for stress. Applying 𝒫_k+1-𝒫_k as the local approximation for the stress and displacement, the mixed methods achieve the optimal order of convergence for both the stress and displacement when k ≥ n . For the lower order case (n-2≤ k更多
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关键词
65N30, 65N55
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