Environmental Engineering Reference
In-Depth Information
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0.8
0.6
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Time (s)
Figure 5: Blade tip displacement time-history.
x 10
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Time (s)
Figure 6: Base shear time-history.
base shear time-history due to the forced vibration of the three rotating blades.
A maximum base shear force of nearly 150 kN is observed. The three rotating
blades are now coupled to the tower-nacelle and the maximum tower tip displace-
ment response is found to be 0.385 m, as presented in the displacement time-
history in Fig. 7. Thus, inclusion of blade-tower interaction results in a 256%
increase in peak tip displacement of the tower compared to the case excluding
blade-tower interaction.
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