Research on Similarities between Abnormal Rotor Model and the Prototype Based on Dynamic Similarity

Abstract:

The natural frequencies of the reduced scale model are higher than that of the prototype, which make it quite difficult to conduct the experimental research on the dynamic characteristics of the rotor system by using normal rotor model. Aiming at this problem, this paper has deduced the similarity criterion of abnormal rotor model based on equation analysis, and the dynamic similarity conditions between abnormal rotor model and the prototype are also discussed. Next, the mass matrix and flexibility matrix are presented based on the lumped parameter model of the rotor system. Finally, the similarities among normal rotor model, abnormal rotor model and the prototype are comparatively analyzed. The results show that the natural frequencies of abnormal rotor model and that of the prototype are all the same while the radial scaling factor is the square of the axial scaling factor. And it provided the theoretical basis for experimentally studying the dynamic characteristics of the rotor system.

• Periodical: Advanced Materials Research (Volumes 591-593)
• Pages: 1991-1995
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.591-593.1991
• Online since: November 2012
• Authors: Ai Lun Wang, Li Kun Huang
• Keywords: Abnormal Rotor Model, Dynamic Similarity, Equation Analysis, Similarity Criterion

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