1. Introduction

The results of a finite element calculation are fields of scalars, vectors or tensors, but also parameters attached to these fields. For example, the modal analysis of a structure leads to the calculation of the eigenvectors (displacement fields) and the associated natural frequencies.

When the calculation is not reduced to the resolution of a single linear system, the operators produce a set of fields and parameters that are grouped together in the « composite » Result data structure described in this document and which is also called, to be more precise, sd_resultat.