Journal
JOURNAL OF COMPUTATIONAL PHYSICS
Volume 433, Issue -, Pages -Publisher
ACADEMIC PRESS INC ELSEVIER SCIENCE
DOI: 10.1016/j.jcp.2021.110179
Keywords
Mimetic spectral element method; Hybridization; Domain decomposition; Variational principle; Lagrange multiplier; De Rham complex
Funding
- China Scholarship Council [201607720010]
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We introduce a domain decomposition structure-preserving method based on a hybrid mimetic spectral element method for three-dimensional linear elasticity problems. The method achieves pointwise equilibrium of forces and uses dual basis functions to simplify discretization and obtain higher sparsity. Numerical tests support the effectiveness of the method.
We introduce a domain decomposition structure-preserving method based on a hybrid mimetic spectral element method for three-dimensional linear elasticity problems in curvilinear conforming structured meshes. The method is an equilibrium method which satisfies pointwise equilibrium of forces. The domain decomposition is established through hybridization which first allows for an inter-element normal stress discontinuity and then enforces the normal stress continuity using a Lagrange multiplier which turns out to be the displacement in the trace space. Dual basis functions are employed to simplify the discretization and to obtain a higher sparsity. Numerical tests supporting the method are presented. (C) 2021 The Author(s). Published by Elsevier Inc.
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