B modeling
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Characteristics of modeling
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The mesh is composed of a single QUAD9 mesh modelled in COQUE_3D.

In the modeling, we force a single iteration in the STAT_NON_LINEsous command the linear elastic behavior relationship only with DEFORMATION = 'PETIT'.


Comparisons and results
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We test the difference between the stress field and the vector of nodal forces calculated by STAT_NON_LINE and those calculated by the CALCUL command.

Note: A significant difference in behavior is observed with DEFORMATION = 'GROT_GDEP' for COQUE_3D. This difference is due to the fact that the normal variation was not taken into account in order CALCUL.