Summary
We consider a class of equilibrium finite element methods for elasticity problems. The approximate stresses satisfy the equilibrium equations but the symmetry of the stress tensor is relaxed. Optimal error bounds for the stresses and numerical examples are given.
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Amara, M., Thomas, J.M. Equilibrium finite elements for the linear elastic problem. Numer. Math. 33, 367–383 (1979). https://doi.org/10.1007/BF01399320
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DOI: https://doi.org/10.1007/BF01399320