Etude dynamique de la passerelle - PLATEFORME OUVRAGES D ...

Instrumentation, mesuresDétermination du coeff. d’amortissement60,0045,0040,0040,0035,0020,000,0020,0120,5020,9921,4721,9622,4522,9423,4323,9224,4024,8925,3825,8726,3626,8527,3327,8228,3128,8029,2929,7830,2630,7531,2431,7332,2232,7033,1933,6834,1734,6635,1535,6336,1236,6137,1037,5938,0838,5639,0539,5430,0025,00y = 40,522e -0,005xR 2 = 0,9938-20,0020,00-40,0015,000,00 20,00 40,00 60,00 80,00 100,00 120,00 140,00 160,00 180,00 200,00-60,0025,00Pic à 2,20 Hz20,0015,0010,005,00Mode 1 :Fréquence exacte 2,2 Hz(Calcul à vide : 2,19Hz !)Amortissement : 0,5 %0,00170,250,450,650,851,051,251,451,651,852,052,252,452,652,853,053,253,453,653,854,054,254,454,654,855,055,255,455,655,8517