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Table 6. Percentual portions of potential and kinetic energy
Potential/kinetic energy
Structural elements
f
01
= 1.58 Hz
f
02
= 1.81 Hz
beam
80/35
90/16
tie
12/3
6/1
cylinder
8/0
4/0
yoke
0/0
0/0
external mass
62
73
Table 7. Percentual distribution of the strain energy
E
d
Elements SA00 SA10 SA20 SA01 SA11 SA02 SA12
Σ
1418
647
709
669
310
551
287
beam
72.2
59.3 60.4 49.2
21.3 41.8 15.3
tie
16.8
3.4
2.6
26.8
8.3
28.5 10.2
cylinder 10.5
23.0 22.9 22.3
48.1 27.1 51.9
yoke
0.5
3.3
3.4
1.7
5.6
2.6
6
new tie
-
11.0 10.7
-
16.7
-
16.5
fill
-
-
0
-
-
-
-
Table 8. Natural frequencies of considered variants (in Hz)
DA00 DA10 DA20 DA01 DA11 DA21 DB00 DB20
f
01
1.58 2.03 2.23 1.62 3.04 3.05 1.61 2.58
f
02
1.81 2.38 4.64 2.33 3.92 6.3 3.22 6.94
f
03
4.30 4.19 9.43 3.08 6.03 9.22 9.31 12.27
Figure 17. Frequency response for vertical excitation in the node of linking tie, yoke,
and cylinder (left), and the response on the left part of the beam – DA00 (right)
f
max
= 10.4 cm
f
max
= 7.57 cm
f
max
= 5.55 cm
f
max
= 3.62 cm
Figure 18. Geometry and deformation of some model variants
286