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- W2598964362 abstract "In this thesis, a stress recovery procedure for 3-D linear finite elements is presented. The formulation is based on a modified version of the Hu-Washizu variational principle, in which the recovered stresses are calculated by minimizing the error with respect to the directly-computed stresses, and ensuring that the recovered stresses satisfy equilibrium in an average sense over the patch of elements. Through a set of examples, it is demonstrated that, in linear elasticity the recovered stresses converge at a higher rate than the directly-calculated stresses and that in some cases the rate of convergence is the same as that of the displacement field. This procedure builds on work of Payen and Bathe. The current technique can be readily implemented into existing finite element codes. The method is implemented and verified in hybrida, a python and C++ based finite element package being developed in the Structural Optimization and Mechanics (SOM) group of the PME department in the 3me faculty of TU Delft" @default.
- W2598964362 created "2017-04-07" @default.
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- W2598964362 date "2016-01-01" @default.
- W2598964362 modified "2023-09-27" @default.
- W2598964362 title "A stress recovery procedure for 3-D linear finite elements" @default.
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- W2598964362 hasPublicationYear "2016" @default.
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