Application of Improved Dynamic Substructure Finite Element Model-Based State-Space Techniques in Mistuned Blisks

Bai, Baojun; Zhang, Chuan hui; Guangwei, Zhu; Wu, Qi

doi:10.1155/2020/8817531

Cited by 11 publications

(1 citation statement)

References 41 publications

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“…In 1968, Craig and Bampton [12] improved Hurty's method to form the current fixed interface modal synthesis method, which is named the Craig-Bampton method. After decades of development, the substructure methods have become a significant analytical method in the field of structural dynamics, which are widely used in the aerospace [13][14][15][16]. For nonlinear problems in aircraft structures, a number of scholars have developed novel substructure methods from different perspectives in recent years.…”

Section: Introductionmentioning

confidence: 99%

A Framework for Rapidly Predicting the Dynamics of Flexible Solar Arrays in the China Space Station with a Verification Based on On-Orbit Measurement Data

Wu,

Yan,

Zhao

et al. 2024

Aerospace

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The Chinese space station is a complex structure with large flexible appendages. Obtaining the on-orbit response characteristics of such a structure under different working conditions is a traditional and classic challenge in the field of dynamics. To address the on-orbit dynamics of the China Space Station, the basic equations for dynamic reduction, assembly and data recovery of linear and nonlinear substructures are derived based on the reduction and recovery theory, and a fast coupling analysis framework for flexible systems with nonlinear attachments is formed. This coupling analysis framework is adopted to quickly acquire the dynamic response of the China Space Station during in-orbit operation, thereby guiding the design. Taking SZ-15 radial docking to the Chinese Space Station as the object, the substructure of six nonlinear flexible arrays is reduced, the full flexible dynamic equation of the space station is assembled, and the response of each part of the flexible wing during the docking process is analyzed and recovered. By designing a reasonable and reliable flexible wing test scheme in-orbit, the acceleration at the root and top of the flexible wing during the docking of SZ-15 is obtained. The measured data in-orbit show that the acceleration analysis results of the typical parts of the flexible wing have a good agreement, which verifies the correctness of the fast coupling analysis framework of the flexible system. Hence, the dynamic coupling characteristics analysis of the main structure of the space station and the flexible wing based on this method can better guide the rationality of the design of the dynamic characteristics of the Chinese Space Station.

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Section: Introductionmentioning

confidence: 99%

A Framework for Rapidly Predicting the Dynamics of Flexible Solar Arrays in the China Space Station with a Verification Based on On-Orbit Measurement Data

Wu,

Yan,

Zhao

et al. 2024

Aerospace

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Accuracy analysis of satellite antenna panel expansion based on BP neural network

Qian

Zhang

Huang

et al. 2023

Quality & Reliability Eng

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Large deployable space mechanisms are widely used in the field of aerospace and have been paid increasingly high attention recently. The satellite antenna expansion system is the classic large deployable space mechanism. However, during the expansion of the satellite antenna deployable mechanism, the expansion accuracy is affected by the existing various uncertain factors which even result in scraping the satellite. For example, the hinge locking error has the significant influence on the deployment accuracy of the satellite antenna panel. In term of this issue, considering the advantage of the back‐propagation (BP) neural network for the high dimensional nonlinear problem, this paper mainly adopts it to analyze the impact of hinge locking error on the expansion accuracy of the antenna panel. The results show that the probability of the actual flatness deviation of the satellite antenna panel falling in the required accuracy area is 99.56%, and the probability of the actual pointing angle deviation falling in the required accuracy area is 99.84%.

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Dynamics analysis of deployment process of the Bennett linkage with revolute clearance joints

Li,

Zheng,

et al. 2024

Nonlinear Dyn

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Application of Improved Dynamic Substructure Finite Element Model-Based State-Space Techniques in Mistuned Blisks

Cited by 11 publications

References 41 publications

A Framework for Rapidly Predicting the Dynamics of Flexible Solar Arrays in the China Space Station with a Verification Based on On-Orbit Measurement Data

A Framework for Rapidly Predicting the Dynamics of Flexible Solar Arrays in the China Space Station with a Verification Based on On-Orbit Measurement Data

Accuracy analysis of satellite antenna panel expansion based on BP neural network

Dynamics analysis of deployment process of the Bennett linkage with revolute clearance joints

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