Dynamic Analysis of Supercritical Multispan Rotor System With Flexible Connections and Elastic Supports

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The dynamic model predicts critical speeds with errors less than 4.3% compared to experimental data.
Time‐varying stiffness in ball bearings impacts dynamic behavior significantly at low speeds, reducing as speed increases.
Laminated coupling decreases mutual dynamic effects between rotors, allowing for more independent operation.
Rubber damping rings reduce resonance amplitudes and lower bearing acceleration peaks, enhancing system lifespan.

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Hybrid modeling integrates finite element methods and compounds dynamic effects in multispan rotor systems, suggesting better designs.

Zhu et al. (2025) studied this question.

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