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- W2055767533 abstract "The arch problem with shear deformation based upon the Hellinger-Reissner variational formulation is studied in a parameter-dependent form. A mixed Petrov-Galerkin method is used to construct a discrete approximation. Finite elements with equal-order discontinuous stress and continuous displacement interpolations, unstable in the Galerkin method, are proved to be stable in the new formulation. Error estimates indicate optimal rates of convergence for displacements and suboptimal rates, with gap one, for stresses. Numerical experiments confirm these estimates. The good accuracy of the mixed Petrov-Galerkin method is illustrated in some deep and shallow thin arch examples. No shear or membrane locking is present using full integration schemes." @default.
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- W2055767533 date "1987-08-01" @default.
- W2055767533 modified "2023-09-23" @default.
- W2055767533 title "Stability, convergence and accuracy of a new finite element method for the circular arch problem" @default.
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- W2055767533 doi "https://doi.org/10.1016/0045-7825(87)90074-0" @default.
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