Vibration Analysis of Aeroengine Blisk Structure Based on a Prestressed CMS Super-Element Method

Table 6

Natural frequencies of typical orders at different aspect ratios of fixed width.

Aspect ratio	1st	39th	77th	84th	120th
1.5	99.19	839.86	1769	3341	4307
1.75	100.35	717.73	1508	3239	3506
2	101.66	636.4	1319	2895	2979
2.25	103.14	578.26	1176	2520	2590
2.5	104.4	534.58	1062	2250	2300