On a consistent field transfer in non linear inelastic analysis and ultimate load computation |
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Authors: | Delphine Brancherie Pierre Villon Adnan Ibrahimbegovic |
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Affiliation: | (1) Université de Technologie de Compiègne, Laboratoire Roberval, BP 20529, 60205 Compiègne Cedex, France;(2) école Normale Supérieure de Cachan, Laboratoire de Mécanique et Technologie, 61, av. du président Wilson, 94235 Cachan, France |
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Abstract: | In this work we propose a field transfer operator for remeshing carried out in the course of incremental analysis of a non
linear inelastic behavior. The proposed procedure is geared towards the ultimate load computation of a complex structure,
where we choose the appropriate mesh grading for each different phase of computations, starting with a coarse mesh for the
initial linear response and going towards a more refined mesh for highly nonlinear inelastic response. The proposed projection
operator is developed on the basis of diffuse approximation method. The key feature of such an operator is to guarantee the
conservation of relevant mechanics quantities which ensures a superior performance of the proposed field transfer with respect
to the standard remeshing procedure. We present the illustrative results both for an isotropic damage model and standard plasticity
model, indicating very satisfying performance. |
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Keywords: | Non linear analysis Adaptive remeshing Data transfer operator |
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