Generalized Differential Quadrature Method for Free Vibration Analysis of a Rotating Composite Thin-Walled Shaft

Table 2

The first natural frequencies of the shaft for different boundary conditions and various rotating speed ().

Rotating  Speed  [rpm]	Frequency ω [Hz]
	1B(C-C)	1F(C-C)	1B(S-S)	1F(S-S)	1B(C-F)	1F(C-F)
0	289.3935	289.3935	207.0878	207.0878	49.0284	49.0284
100	287.7097	291.0775	205.4020	208.7737	47.3530	50.7041
200	286.0260	292.7615	203.7163	210.4598	45.6779	52.3801
300	284.3423	294.4457	202.0308	212.1461	44.0031	54.0564
400	282.6588	296.1299	200.3455	213.8326	42.3286	55.7330
500	280.9753	297.8142	198.6603	215.5191	40.6544	57.4099
600	279.2920	299.4987	196.9752	217.2059	38.9806	59.0871
700	277.6087	301.1832	195.2904	218.8928	37.3070	60.7646
800	275.9256	302.8678	193.6057	220.5798	35.6337	62.4424
900	274.2425	304.5526	191.9211	222.2670	33.9607	64.1205
1000	272.5596	306.2374	190.2367	223.9544	32.2881	65.7990