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

Table 2

The comparison of natural frequencies at and .

Mode order	Global method/Hz	Prestressed CMS method/Hz	Vibration shape
1–10	434.42–439.53	434.45–439.58	Blade vibration of the first-stage blisk
11–38	440.36–442.86	440.38–442.90
39	546.07	546.10	Blade vibration of the second-stage blisk
40–43	568.14–586.83	568.21–586.90
44–91	591.65–598.57	591.70–599.83