轴对称薄壁结构自由振动的边界元分析1)

周琪, 陈永强

FREE VIBRATION ANALYSIS OF THIN-WALLED AXISYMMETRIC STRUCTURES WITH BOUNDARY ELEMENT METHOD1)

Zhou Qi,Chen Yongqiang

表3 环向波数n= 0常规圆筒高阶对称频率

Table 3 The high order symmetrical frequency of the general hollow cylinder with n = 0

Nod 10th 50th 100th 150th 200th 300th 850 9.038 598 9 24.444 439 36.248 822 45.450 729 55.389 133 75.967 757 1122 9.036 501 3 24.441 012 35.981 287 46.046 117 54.695 635 74.334 159 1522 9.036 523 7 24.438 609 35.976 340 46.046 351 54.683 062 74.246 037 2322 9.036 535 1 24.438 314 35.975 216 46.046 477 54.682 184 74.199900 3122 9.036 538 8 24.438 263 35.974922 46.046 492 54.682 054 74.197708 3922 9.036 540 6 24.438 240 35.974777 46.046 495 54.681 993 74.197958