Aiming at the safety of the circularly interlocked blade(CIB),the strength of the blade and flange was simulated by ANSYS Workbench.And the vibration characteristics was also analyzed by the single blade and flange model.The calculation result shows that the stress strength of the blade and flange was less than the yield strength of the material at the working condition.At the same time,there was no"triple junction",the resonance will not occur.The blade design matches safety requirements under the operation condition.The results had certain reference value for the engineering design.
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