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Interaction sol-structure en milieu stochastique - Bibliothèque Ecole ...

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Chapitre 2: MODELES DISCRETS À CARACI ÉRISTIQUES ALÉATOIRES<br />

25<br />

ecart type du <strong>milieu</strong>=3Ò%<br />

20<br />

L=l0.5m<br />

15<br />

ro=15m<br />

o.<br />

w<br />

lo<br />

ecail type=21%<br />

nflm<br />

-40 -20 0 20 40 60 80 100<br />

ciasse max mode 1<br />

120<br />

Figure 2.72: Amplitude du pic relatif au pompage<br />

60<br />

50<br />

ecart type du <strong>milieu</strong>=30%<br />

40<br />

L-l0.5ni<br />

ro..15m<br />

ecart type-120%<br />

20<br />

lo<br />

I i Ii<br />

I<br />

-100 -50 0 50 100 150 200 250<br />

Figure 2.73: Amplitude relative au pic de balancem<strong>en</strong>t<br />

300<br />

123

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