Bestrijding van lawaai- en trillingshinder - the Dept. of Mechanical ...
Bestrijding van lawaai- en trillingshinder - the Dept. of Mechanical ...
Bestrijding van lawaai- en trillingshinder - the Dept. of Mechanical ...
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Frequ<strong>en</strong>cy Response Function (FRF)<br />
–<br />
H( ω ) =<br />
(k −m 1<br />
2<br />
ω ) + i b ω<br />
1<br />
k<br />
b = 0<br />
1<br />
≈ 2<br />
ω<br />
m<br />
Natural (eig<strong>en</strong>) frequ<strong>en</strong>cy<br />
for b = 0 ⇒ H( ω ) = ∞ wh<strong>en</strong> ω= ω =<br />
<strong>Bestrijding</strong> <strong>van</strong> <strong>lawaai</strong>- <strong>en</strong> <strong>trillingshinder</strong>, Les 3, 2008<br />
0°<br />
-90°<br />
-180°<br />
n<br />
21<br />
k<br />
m<br />
ω 1<br />
f n<br />
n = =<br />
2π<br />
2π<br />
fn<br />
k<br />
m<br />
Acoustics & Vibration Research Group<br />
Vrije Universiteit Brussel