You will find here the results for linear quadrangle shell
element with different mesh refinements:
|
8 x 8 elements
Mode |
Reference frequency [Hz] |
Linear quadrangle shell (8 x 8 elements) |
|
Frequency [Hz] |
Error [%] |
1 |
2.377 |
2.402 |
1.034 |
2 |
5.942 |
6.210 |
4.516 |
3 |
5.942 |
6.210 |
4.516 |
4 |
9.507 |
10.073 |
4.516 |
5 |
11.884 |
13.298 |
5.951 |
6 |
11.884 |
13.298 |
11.894 |
7 |
15.449 |
17.381 |
11.894 |
8 |
15.449 |
17.381 |
12.506 |
|
|
16 x 16 elements
Mode |
Reference frequency [Hz] |
Linear quadrangle shell (16 x 16 elements) |
|
Frequency [Hz] |
Error [%] |
1 |
2.377 |
2.382 |
0.189 |
2 |
5.942 |
5.997 |
0.928 |
3 |
5.942 |
5.997 |
0.928 |
4 |
9.507 |
9.598 |
0.960 |
5 |
11.884 |
12.183 |
2.512 |
6 |
11.884 |
12.183 |
2.512 |
7 |
15.449 |
15.774 |
2.103 |
8 |
15.449 |
15.774 |
2.103 |
|
|
64 x 64 elements
Mode |
Reference frequency [Hz] |
Linear quadrangle shell (64 x 64 elements) |
|
Frequency [Hz] |
Error [%] |
1 |
2.377 |
2.377 |
0.007 |
2 |
5.942 |
5.944 |
0.035 |
3 |
5.942 |
5.944 |
0.035 |
4 |
9.507 |
9.509 |
0.019 |
5 |
11.884 |
11.897 |
0.112 |
6 |
11.884 |
11.897 |
0.112 |
7 |
15.449 |
15.458 |
0.058 |
8 |
15.449 |
15.458 |
0.058 |
|
|
128 x 128 elements
Mode |
Reference frequency [Hz] |
Linear quadrangle shell (128 x 128 elements) |
|
Frequency [Hz] |
Error [%] |
1 |
2.377 |
2.377 |
0.016 |
2 |
5.942 |
5.942 |
0.007 |
3 |
5.942 |
5.942 |
0.007 |
4 |
9.507 |
9.505 |
0.017 |
5 |
11.884 |
11.884 |
0.001 |
6 |
11.884 |
11.884 |
0.001 |
7 |
15.449 |
15.446 |
0.021 |
8 |
15.449 |
15.446 |
0.021 |
|
|
|
Reference:
BENCHMARK newsletter, Report No. E1261/R002, February
1989, p.21, NAFEMS - Glasgow |
|