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Table 7.

Comparison of computational eigenfrequencies of the AMNM and experimental eigenfrequencies of 25 samples (in Hz).

Sample# Mode 1 Mode 2 Mode 3 Mode 4 Mode 5 Mode 6 Mode 7 Mode 8

AMNM 140 144 388 404 694 760 779 1212
02 120 125 342 350 663 673 1049 1062
03 121 128 332 358 671 684 1037 1080
04 121 127 332 346 653 674 1015 1054
05 109 117 306 332 607 640 954 1026
06 113 122 306 334 603 679 953 1129
07 103 114 289 323 575 620 954 1027
08 120 127 333 356 658 683 1016 1072
09 127 136 351 382 680 749 1044 1191
10 109 117 311 332 618 653 996 1029
11 115 125 326 353 649 683 1024 1096
12 110 117 305 326 604 629 966 1017
13 118 125 333 351 654 675 1022 1061
14 106 110 298 313 584 603 939 961
15 106 116 298 331 593 637 947 1032
16 116 122 329 343 623 655 982 989
17 109 119 307 335 606 645 970 1030
18 112 119 314 339 602 672 939 1099
19 113 123 321 348 617 661 976 1114
20 118 125 334 352 643 674 1011 1055
21 107 110 313 318 620 627 1005 1008
22 138 141 382 392 732 756 1154 1187
23 129 136 356 379 707 723 1111 1141
24 111 114 308 321 603 620 952 1055
25 113 120 315 336 615 645 982 1009
26 119 122 338 346 659 670 1030 1049

Mean 115 122 323 344 634 665 1001 1063
Std. dev. 8.1 7.7 21.1 19.6 38.6 37.3 52.7 56.9
CoV (%) 7.0 6.3 6.5 5.7 6.1 5.6 5.3 5.4

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