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Directional hyper-reduced model for evaluation of residual welding stresses in code_aster

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      The welding process produces strains and residual stresses that must be taken into account to evaluate the final quality of the assembly. For that, the simulation of the process by a thermomechanical computation is very widely used. Numerical simulation uses many parameters (materials, heat source, boundary conditions) whose effects must be studied. But as the compuation becoming very expensive, massive parametric studies quickly become unusable. To reduce the computation time, we propose an approach based on the spatial and temporal similarity of thermal results, by a method of hyper-reduction on a slice of the domain.

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      [1 ]EDF R&D – France
      [2 ]MINES ParisTech, PSL Research University, MAT-Centre des matériaux, CNRS UMR 7633 – France
      [3 ]IMSIA, UMR 9219 EDF-CNRS-CEA-ENSTA, Université Paris Saclay – France
      [* ]Correspondence: david.ryckelynck@
      ScienceOpen Posters
      27 April 2018
      Copyright © 2018

      This work has been published open access under Creative Commons Attribution License CC BY 4.0, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. Conditions, terms of use and publishing policy can be found at


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