ensemble des interactions modales prises en compte. La courbe rouge correspond au calcul effectué avec le post-processeur parallélisé (introduit dans la partie 5.3.1) Dans cet outil, les interactions modales ne sont pas prises en compte ,
pour chaque fréquencé etudiée, seuls les modes dont la fréquence propre est proche sont considérés. Les résultats de ces trois calculs diffèrent un peù a cause des hypothèses simplificatrices, La figure 11 démontre cependant que l'influence de ces hypothèses est très faible alors que le gain en temps de calcul est considérable ,
En revanche le terme cos(??/U c ) a une influence très importante sur la réponse structuralè a partir de 800 ,
Demanì ere générale, ce terme peutêtrepeutêtre négligé lorsque la fréquence est inférieurè a U c ,
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