Fast Solution of Underwater Vehicle Vibration Response Based on POD Method

Heng Wang; Kuan Lu; Jun Liu; Jianzhong Tong; Wei Zheng; Kangyu Zhang

doi:10.16356/j.1005-2615.2024.06.009

Fast Solution of Underwater Vehicle Vibration Response Based on POD Method

Heng Wang, Kuan Lu, Jun Liu, Jianzhong Tong, Wei Zheng, Kangyu Zhang

School of Mechanics,Civil Engineering and Architecture

Research output: Contribution to journal › Article › peer-review

Abstract

The proper orthogonal decomposition (POD) method is used to model the shell-motor-rotor coupled system with bearing nonlinearities to reduce the computational cost. The rotor system with 192 degrees of freedom is modeled by the finite element method for the coupled shell-motor-rotor structure. The basic principle of the POD method and its specific expression in the shell-motor-rotor coupled system are introduced. By using the POD method,the shell-motor-rotor coupled system is reduced to 20,18 and 15 degrees of freedom,and the computation time is reduced by more than 94%. The time course curves and spectra of the simplified system and the original system are compared,which verifies the efficiency and accuracy of the POD method.

Translated title of the contribution	基于 POD 方法的水下航行器振动响应快速求解
Original language	English
Pages (from-to)	1066-1073
Number of pages	8
Journal	Nanjing Hangkong Hangtian Daxue Xuebao/Journal of Nanjing University of Aeronautics and Astronautics
Volume	56
Issue number	6
DOIs	https://doi.org/10.16356/j.1005-2615.2024.06.009
State	Published - Dec 2024

Keywords

nonlinear system
proper orthogonal decomposition(POD)method
underwater vehicle

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10.16356/j.1005-2615.2024.06.009

Cite this

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title = "Fast Solution of Underwater Vehicle Vibration Response Based on POD Method",

abstract = "The proper orthogonal decomposition (POD) method is used to model the shell-motor-rotor coupled system with bearing nonlinearities to reduce the computational cost. The rotor system with 192 degrees of freedom is modeled by the finite element method for the coupled shell-motor-rotor structure. The basic principle of the POD method and its specific expression in the shell-motor-rotor coupled system are introduced. By using the POD method,the shell-motor-rotor coupled system is reduced to 20,18 and 15 degrees of freedom,and the computation time is reduced by more than 94%. The time course curves and spectra of the simplified system and the original system are compared,which verifies the efficiency and accuracy of the POD method.",

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author = "Heng Wang and Kuan Lu and Jun Liu and Jianzhong Tong and Wei Zheng and Kangyu Zhang",

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T1 - Fast Solution of Underwater Vehicle Vibration Response Based on POD Method

AU - Wang, Heng

AU - Lu, Kuan

AU - Liu, Jun

AU - Tong, Jianzhong

AU - Zheng, Wei

AU - Zhang, Kangyu

PY - 2024/12

Y1 - 2024/12

N2 - The proper orthogonal decomposition (POD) method is used to model the shell-motor-rotor coupled system with bearing nonlinearities to reduce the computational cost. The rotor system with 192 degrees of freedom is modeled by the finite element method for the coupled shell-motor-rotor structure. The basic principle of the POD method and its specific expression in the shell-motor-rotor coupled system are introduced. By using the POD method,the shell-motor-rotor coupled system is reduced to 20,18 and 15 degrees of freedom,and the computation time is reduced by more than 94%. The time course curves and spectra of the simplified system and the original system are compared,which verifies the efficiency and accuracy of the POD method.

AB - The proper orthogonal decomposition (POD) method is used to model the shell-motor-rotor coupled system with bearing nonlinearities to reduce the computational cost. The rotor system with 192 degrees of freedom is modeled by the finite element method for the coupled shell-motor-rotor structure. The basic principle of the POD method and its specific expression in the shell-motor-rotor coupled system are introduced. By using the POD method,the shell-motor-rotor coupled system is reduced to 20,18 and 15 degrees of freedom,and the computation time is reduced by more than 94%. The time course curves and spectra of the simplified system and the original system are compared,which verifies the efficiency and accuracy of the POD method.

KW - nonlinear system

KW - proper orthogonal decomposition(POD)method

KW - underwater vehicle

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JO - Nanjing Hangkong Hangtian Daxue Xuebao/Journal of Nanjing University of Aeronautics and Astronautics

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ER -

Fast Solution of Underwater Vehicle Vibration Response Based on POD Method

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