Summary of results
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This test case makes it possible to validate the command DYNA_ISS_VARI by calculating the response of a rigid superficial foundation represented either by rigid body modes (MODE_INTERF =' CORP_RIGI '), or by any modes on spring mats determined from static ground impedances (MODE_INTERF =' QUELCONQUE'). The results obtained with DYNA_ISS_VARI are in good agreement with the results of the Mita and Luco reference.