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h= 0.1 h= 0.2
analytical
Explicit Euler
-1.5
-1
-0.5
0
0.5
1
1.5
0 0.2 0.4 0.6 0.8 1
h= 0.1
h= 0.2
analytical
Implicit Euler
0
0.2
0.4
0.6
0.8
1
1.2
0 0.2 0.4 0.6 0.8 1
©
0 5 10 15 20 25 30 35
-5
0
5
10
time (s)
displacement (m)
(a) Displacement of first mass
0 2 4 6 8 10
0
1
2
(b) Power spectrum
Frequency (Hz)
©
020 40 60 80 100 120 140
-2
0
2
time (s)
displacement (m)
(a) Displacement of first floor
00.05 0.1 0.15 0.2 0.25 0.3 0.35
0
0.1
0.2
(b) Power spectrum
Frequency (Hz)
00.5 11.5 2
200
210
220
(a) height (m)
x (m)
00.5 11.5 2
-10
0
10
20
(b) velocity (m/s)
time (s)
v (m/s)
