What does this research mean for the field?

In dual-span rotor systems with quick-insert shaft sleeve coupling, increasing rotational speed causes fluctuating rotor amplitudes, while increasing misalignment at a constant speed enhances the rotor vibration response. Novelty: ClaimNovelty.INCREMENTAL. Consensus alignment: ConsensusAlignment.NEUTRAL.

What question did this study set out to answer?

To examine the nonlinear dynamic vibration characteristics of a dual-span rotor system under misalignment and bearing impact forces to improve the operational stability of a passion fruit pulping mechanism.

August 29, 2026Proceedings of the Institution of Mechanical Engineers Part K Journal of Multi-body Dynamics

Nonlinear dynamic analysis of misalignment-impact coupling fault in a dual-span rotor system

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To examine the nonlinear dynamic vibration characteristics of a dual-span rotor system under misalignment and bearing impact forces to improve the operational stability of a passion fruit pulping mechanism.
Formulated a nonlinear dynamic model using the lumped mass method and derived equations of motion combining Newton's second law with Lagrange's equation.
Conducted harmonic response, finite element, and multi-body dynamic simulations using Adams dynamics software.
Implemented a U-Net semantic segmentation network algorithm to achieve visual vibration measurements of the rotating spindle during physical testing.
Rotor vibration amplitudes fluctuated significantly with changing rotational speed, reaching an optimal operating condition at 250.2 r/min.
Increases in shaft misalignment under constant rotational velocity progressively intensified the rotor vibration response.
Vibration trajectories along horizontal x and y directions demonstrated consistent patterns within acceptable rotational speed and misalignment thresholds.

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Implication

Computational and experimental analysis reveals optimal operating stability at 250.2 r/min in a dual-span pulping rotor, highlighting critical thresholds to minimize misalignment-induced vibration.

Cite This Study

Cao et al. (2026) studied this question.

synapsesocial.com/papers/6a92995f8e5d7d1fc0c11371 https://doi.org/10.1177/14644193261429612

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Implication

Computational and experimental analysis reveals optimal operating stability at 250.2 r/min in a dual-span pulping rotor, highlighting critical thresholds to minimize misalignment-induced vibration.

Nonlinear dynamic analysis of misalignment-impact coupling fault in a dual-span rotor system

Key Points

Discussion

Implication

Cite This Study

Nonlinear dynamic analysis of misalignment-impact coupling fault in a dual-span rotor system

Key Points

Discussion

Implication

Cite This Study

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