Software EUROPLEXUS =================== The *Europlexus* software [:ref:`1 <1>`] is a simulation software dedicated to the rapid dynamic analysis of structures and fluids. EDFco - develops this code in partnership with the owners: the Commission for Atomic Energy and Alternative Energies (CEA) and the European Commission Joint Research Center located in Ispra (Italy). The *Europlexus* software is based on the discretization of space using finite elements. Temporal integration is achieved through an explicit, conditionally stable schema. The resolution algorithm is non-linear both at the geometric level (large displacements, large deformations) and at the material level (non-linear laws of behavior). The *Europlexus* code can be called by the *Code_Aster* software via the macro-command CALC_EUROPLEXUS, which makes it possible to control the execution of a *Europlexus* study from a *Code_Aster* command file. The CALC_EUROPLEXUS command thus makes it possible to define and execute a *Europlexus* study while remaining entirely in the *Code_Aster* environment. The resolution is done in the background by*Europlexus*, without the user having to worry about preparing the *Europlexus* input files. CALC_EUROPLEXUS takes the Aster concepts as arguments, builds the *Europlexus* command file, starts and controls the execution of *Europlexus*, then reconstructs, from a *Europlexus* result file in MED format, an Aster result concept that can then be analyzed with Aster in post-processing. The framework for the CALC_EUROPLEXUS command is detailed in the documentation [:external:ref:`U7.03.10 `]. .. _Ref181174987: .. _Ref181537928: