liste=DEFI_LIST_REEL ( DEBUT =2.0 , INTERVALLE=_F (JUSQU_A=6 ,PAS = 1 . 0 , ) , ) ; We must understand what is done just above. We perform the calcula- tion at five steps or instants, INST in the Code_Aster jargon, from 2 to 6, for every integer: • at INST 2, we have no load at all 2 ; 1 The word instant must be taken here with some restriction, it just only means step, it is not related to time (in time unit, seconds) but the same word, INST, is used by Code_Aster to specify the step in static analysis and a real instant, in seconds, in a dynamic analysis. 2 We start at 2 but we might have started at 0, -5 or 1.342! In linear static the choice is completely arbitrary and left to the user.