Reconstruction schemes of load and constraint for global vibration evaluation of pipeline structures

In this paper, inversion schemes for reconstruction of load and constraint of pipeline structure of a liquid rocket engine for global vibration evaluation of pipelines have been proposed and validated. The method involved modeling for forward simulation of random vibration and a multistep inversion...

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Bibliographic Details
Published inInternational journal of applied electromagnetics and mechanics Vol. 71; no. S1; pp. S589 - S597
Main Authors Gao, Xuan, Chen, Hong-En, Li, Yong, Li, Shuyun, Chen, Hui, Wang, Meng, Yang, Sa, Tian, Shuxia, Chen, Zhenmao
Format Journal Article
LanguageEnglish
Published Amsterdam IOS Press BV 01.01.2023
Subjects
Evaluation
Finite element method
Mathematical models
Numerical methods
Parameters
Random vibration
Reconstruction
Rocket engines
Vibration measurement
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Summary:In this paper, inversion schemes for reconstruction of load and constraint of pipeline structure of a liquid rocket engine for global vibration evaluation of pipelines have been proposed and validated. The method involved modeling for forward simulation of random vibration and a multistep inversion scheme to reconstruct the unknown load and constraint parameters. In parallel, a piping structure vibration experimental system was also established to acquire the measured vibration signals for experimental validation of the numerical method. From both the numerical and experimental results, it was verified that a fine finite element model of a pipeline structure can be established based on the reconstructed load and constraint parameters which enabled a global vibration evaluation of the pipeline structure based on limited vibration information.
ISSN:1383-5416
1875-8800
DOI:10.3233/JAE-220223