Hi freinds,
I have a model in ansys, I did modal analysis on it, but low frequency don't appear in it. in experimental results appear low frequency . please help me, why low frequency don't appear in ansys.
experimental results:
3.5
7.5
11.5
14.5
19
21.5
22
26.5
47.12
72.26
91.11
119.4
135.1
166.5
ansys result:
***** INDEX OF DATA SETS ON RESULTS FILE *****
SET TIME/FREQ LOAD STEP SUBSTEP CUMULATIVE
1 0.30944E-04 1 1 1
2 0.34212E-04 1 2 2
3 0.34847E-04 1 3 3
4 0.10322 1 4 4
5 0.11182 1 5 5
6 0.11809 1 6 6
7 52.365 1 7 7
8 52.729 1 8 8
9 52.896 1 9 9
10 53.779 1 10 10
11 53.785 1 11 11
12 61.944 1 12 12
13 62.084 1 13 13
14 62.127 1 14 14
15 68.243 1 15 15
16 68.375 1 16 16
17 76.588 1 17 17
18 76.747 1 18 18
19 76.842 1 19 19
20 78.983 1 20 20
Regards.