Skip to content
DraconiticResearch
Search Sources API
197,768 studies31 sourcesUpdated 59 min ago
Peer-reviewedCC BY 4.0Mathematics

Platform-Motion Response Evolution and Predicted TDB-Clearance Risk of a Ship-Mounted Flexible Rotor–Active Magnetic Bearing System

  • Houxiang Wang1
  • Zhuo Wang2
  • Wencai Sun1
  • Lingfeng Hu1
  • Xingyu Wang1
  1. 1Naval University of Engineering, Wuhan 430033, China
  2. 2Huazhong University of Science and Technology, Wuhan 430033, China
Open at sourceDOICite

Abstract

Platform motion alters the flexible response and control demand of ship-mounted rotor–active magnetic bearing (AMB) systems and thereby the clearance margin at the touchdown bearings (TDBs). A closed-loop finite-element model of a flexible rotor–AMB system is subjected to prescribed heave, sway, pitch, and yaw motions at five rotational speeds and 4 × 4 amplitude–frequency levels (320 cases). Responses are evaluated at the TDBs, the disk, and 36 axial positions, together with the AMB control force and the ratio of peak TDB displacement to minimum clearance, assessed against the ISO 14839-2 zones. Stronger excitation increases the support and disk responses and moves the axial response peak; each platform motion has its own dominant direction and left–right support relation. Ten cases, all high-amplitude, high-frequency heave or sway, enter zone D; the maximum clearance ratio is 0.635, and its correlation with the maximum control force is 0.9995. A closed-form envelope derived from the closed-loop dynamic stiffness reproduces the simulated ratios and shows that the zone boundaries are set by the platform acceleration amplitude: zone D requires 4.9–7.1 g under heave or sway. The disk displacement peaks at 2500 rpm, whereas the control force and clearance ratio peak at 7000 rpm, so deformation, control demand, and clearance margin have to be assessed together.

Related

  1. Well--posedness and homogenization of a waste--protein clearance model in cortical tissue
    Miroslav Bulíček, Ansgar Jüngel, Marie E. Rognes +1
    arXivPreprintCC BY 4.0Full textAnalysis & PDEsarXiv
  2. One Shot, Twenty-One Balls: A Computer-Assisted Proof of a Single-Stroke Total Clearance in an Idealized Model of Snooker
    Avner Kantor
    arXivPreprintCC BY 4.0Full textDynamical systemsStatistical & nonlinear physicsarXiv
  3. RELATIVE BIHOM-PRE-ANTI-FLEXIBLE ALGEBRAS : CONSTRUCTIONS AND RELATED ALGEBRAIC STRUCTURES
    Aloulou Walid, Jebli Mansour
    HALPreprintPublisher termsFull textAlgebra & number theoryHAL
  4. A Flexible Threshold Biomarker (FTB) Trial Design for Treatment Intensification and De-intensification
    Weilin Wang, Kelley M. Kidwell, Robert T. Dess +1
    Clinical trials (London, England)Peer-reviewedLicence not statedFull textStatisticsPMC
  5. Flexible nonparametric inference for causal effects under the front-door model
    Anna Guo, David C. Benkeser, Razieh Nabi
    Journal of the Royal Statistical Society Series B (Statistical Methodology)Peer-reviewedLicence not statedFull text11 citedStatisticsOpenAlex

Cite

BibTeXRIS
BibTeX
@article{wang2026platformmotion,
  title = {{Platform-Motion Response Evolution and Predicted TDB-Clearance Risk of a Ship-Mounted Flexible Rotor–Active Magnetic Bearing System}},
  author = {Houxiang Wang and Zhuo Wang and Wencai Sun and Lingfeng Hu and Xingyu Wang},
  journal = {Mathematics},
  year = {2026},
  month = oct,
  doi = {10.3390/math14213942},
  url = {https://www.mdpi.com/2227-7390/14/21/3942},
  note = {CC BY 4.0},
}
RIS
TY  - JOUR
TI  - Platform-Motion Response Evolution and Predicted TDB-Clearance Risk of a Ship-Mounted Flexible Rotor–Active Magnetic Bearing System
AU  - Houxiang Wang
AU  - Zhuo Wang
AU  - Wencai Sun
AU  - Lingfeng Hu
AU  - Xingyu Wang
PY  - 2026
DA  - 2026/10/28
JO  - Mathematics
DO  - 10.3390/math14213942
UR  - https://www.mdpi.com/2227-7390/14/21/3942
AB  - Platform motion alters the flexible response and control demand of ship-mounted rotor–active magnetic bearing (AMB) systems and thereby the clearance margin at the touchdown bearings (TDBs). A closed-loop finite-element model of a flexible rotor–AMB system is subjected to prescribed heave, sway, pitch, and yaw motions at five rotational speeds and 4 × 4 amplitude–frequency levels (320 cases). Responses are evaluated at the TDBs, the disk, and 36 axial positions, together with the AMB control force and the ratio of peak TDB displacement to minimum clearance, assessed against the ISO 14839-2 zones. Stronger excitation increases the support and disk responses and moves the axial response peak; each platform motion has its own dominant direction and left–right support relation. Ten cases, all high-amplitude, high-frequency heave or sway, enter zone D; the maximum clearance ratio is 0.635, and its correlation with the maximum control force is 0.9995. A closed-form envelope derived from the closed-loop dynamic stiffness reproduces the simulated ratios and shows that the zone boundaries are set by the platform acceleration amplitude: zone D requires 4.9–7.1 g under heave or sway. The disk displacement peaks at 2500 rpm, whereas the control force and clearance ratio peak at 7000 rpm, so deformation, control demand, and clearance margin have to be assessed together.
SN  - 2227-7390
ER  -