Similitude for the Dynamic Characteristics of Dual-Rotor System with Bolted Joints

Li, Lei; Zhang, Luo; He, Fei; Qin, Zhaoye; Li, Yuqi; Yan, Xiaolu

doi:10.3390/math10010003

Cited by 6 publications

(2 citation statements)

References 40 publications

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“…Zhao et al [8] studied the scaling design of rotor system under the condition of limited changes in some design parameters, they designed the distorted rotor model by utilizing optimization algorithm, the accuracy of the method was verified through modal tests. Luo et al [1,9,10] have done a lot of research on the scaling design of the rotor system, they obtained the scaling design method applicable to the consideration of gravity acceleration and multi-rotor structure, the effectiveness of the proposed design method was verified through numerical results and experiments. However, there are few studies on the scaled design of rotor systems using different materials and different design speeds at present, in addition, there is a lack of research on the prediction of prototype machines using scaled rotors with different operating speeds.…”

Section: Introductionmentioning

confidence: 99%

On scaling design and dynamic response prediction of rotor systems

Zhao,

Chen,

Jiao

2023

Progress in Canadian Mechanical Engineering. Volume 6

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Rotor-bearing systems are widely used in wind turbines, gas turbines and other rotating machinery. However, due to economic and realizable factors, it is difficult to directly experiment and test the prototype in the design process of the new rotor system. Therefore, it is very important to design a small-size scaled rotor system that can reflect the dynamic characteristics of the prototype. In this study, a prototype model of the rotor system was established. Based on the similarity theory, six scaled rotor models with different sizes and materials were designed to predict the critical speeds of the prototype rotor system. The results show that when the speed scaling factor is changed, the error of critical speed increases with the decrease of the length scaling factor. The deviation of the first two critical speeds predicted by the model M3, which adjusted the length and speed scaling factor simultaneously, are -0.08% and -0.01%, respectively, this model can accurately predict the first two critical speeds of the prototype rotor system. After the equivalent modeling of rotor system with complex structure, the results presented in this paper can be further applied to the scaling design and fault diagnosis of the full-size rotating machinery.

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Section: Introductionmentioning

confidence: 99%

On scaling design and dynamic response prediction of rotor systems

Zhao,

Chen,

Jiao

2023

Progress in Canadian Mechanical Engineering. Volume 6

View full text Add to dashboard Cite

show abstract

“…In the paper by Li et al [20], the scaling relationships for the dual-rotor system with bolted joints are proposed for predicting the responses of full-scale structure, which are developed by generalized and fundamental equations of substructures (shaft, disk, and bolted joints). Different materials between the prototype and model are considered in the derived scaling relationships.…”

mentioning

confidence: 99%