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

Table 7

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

Aspect ratio	1st	39th	77th	84th	120th
1.5	103.51	640.82	1094	2854	2971
1.75	102.52	638.58	1208	2892	2993
2	101.66	636.4	1319	2895	2979
2.25	101.14	634.69	1430	2878	2969
2.5	100.63	632.64	1540	2804	2966