A Deformation Reconstruction Strategy for Integrated Truss Structures Subjected to Thermal–Mechanical Load
The deformation monitoring of integrated truss structures (ITSs) is essential for ensuring the reliable performance of mounted equipment in complex space environments. Reconstruction methods based on local strain information have been proven effective, yet the identification faces significant challe...
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| Format: | Article |
| Language: | English |
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MDPI AG
2025-01-01
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| Series: | Sensors |
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| Online Access: | https://www.mdpi.com/1424-8220/25/2/558 |
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| author | Zexing Yu Xiaofei Ma Jialong Zhu Dayu Zhang Yonggang Xue Pengfei Huang Yichen Li Hao Li |
| author_facet | Zexing Yu Xiaofei Ma Jialong Zhu Dayu Zhang Yonggang Xue Pengfei Huang Yichen Li Hao Li |
| author_sort | Zexing Yu |
| collection | DOAJ |
| description | The deformation monitoring of integrated truss structures (ITSs) is essential for ensuring the reliable performance of mounted equipment in complex space environments. Reconstruction methods based on local strain information have been proven effective, yet the identification faces significant challenges due to variable thermal–mechanical loads, interactions among structural components, and special boundary conditions. This paper proposes a deformation reconstruction strategy tailored for ITSs under combined thermal–mechanical load scenarios wherein deformations of both the primary truss structures and the attached panel systems are investigated. The proposed approach utilizes Ko displacement theory as the core algorithm, while the least squares optimization method is employed to determine the integration with unknown initial values during the reconstruction process. Validation is conducted through diverse load scenarios, and the reconstruction results are evaluated using errors based on the root mean square. The result demonstrates that the proposed method can reconstruct deformations of truss structures under both mechanical and thermal loads. Furthermore, the optimization-based approach achieves accurate reconstructed results in the case of panels with two-point fixed boundary conditions. This study provides an effective strategy for in-orbit deformation reconstruction, addressing challenges posed by complex loads and structural configurations. |
| format | Article |
| id | doaj-art-6efd5eff139642579c8609a98193b963 |
| institution | Kabale University |
| issn | 1424-8220 |
| language | English |
| publishDate | 2025-01-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Sensors |
| spelling | doaj-art-6efd5eff139642579c8609a98193b9632025-01-24T13:49:20ZengMDPI AGSensors1424-82202025-01-0125255810.3390/s25020558A Deformation Reconstruction Strategy for Integrated Truss Structures Subjected to Thermal–Mechanical LoadZexing Yu0Xiaofei Ma1Jialong Zhu2Dayu Zhang3Yonggang Xue4Pengfei Huang5Yichen Li6Hao Li7Xi’an Institute of Space Radio Technology, Xi’an 710100, ChinaXi’an Institute of Space Radio Technology, Xi’an 710100, ChinaXi’an Institute of Space Radio Technology, Xi’an 710100, ChinaXi’an Institute of Space Radio Technology, Xi’an 710100, ChinaXi’an Institute of Space Radio Technology, Xi’an 710100, ChinaXi’an Institute of Space Radio Technology, Xi’an 710100, ChinaXi’an Institute of Space Radio Technology, Xi’an 710100, ChinaXi’an Institute of Space Radio Technology, Xi’an 710100, ChinaThe deformation monitoring of integrated truss structures (ITSs) is essential for ensuring the reliable performance of mounted equipment in complex space environments. Reconstruction methods based on local strain information have been proven effective, yet the identification faces significant challenges due to variable thermal–mechanical loads, interactions among structural components, and special boundary conditions. This paper proposes a deformation reconstruction strategy tailored for ITSs under combined thermal–mechanical load scenarios wherein deformations of both the primary truss structures and the attached panel systems are investigated. The proposed approach utilizes Ko displacement theory as the core algorithm, while the least squares optimization method is employed to determine the integration with unknown initial values during the reconstruction process. Validation is conducted through diverse load scenarios, and the reconstruction results are evaluated using errors based on the root mean square. The result demonstrates that the proposed method can reconstruct deformations of truss structures under both mechanical and thermal loads. Furthermore, the optimization-based approach achieves accurate reconstructed results in the case of panels with two-point fixed boundary conditions. This study provides an effective strategy for in-orbit deformation reconstruction, addressing challenges posed by complex loads and structural configurations.https://www.mdpi.com/1424-8220/25/2/558deformation reconstructionlarge space trussthermal–mechanical loadKo displacement theorystructural health monitoring |
| spellingShingle | Zexing Yu Xiaofei Ma Jialong Zhu Dayu Zhang Yonggang Xue Pengfei Huang Yichen Li Hao Li A Deformation Reconstruction Strategy for Integrated Truss Structures Subjected to Thermal–Mechanical Load Sensors deformation reconstruction large space truss thermal–mechanical load Ko displacement theory structural health monitoring |
| title | A Deformation Reconstruction Strategy for Integrated Truss Structures Subjected to Thermal–Mechanical Load |
| title_full | A Deformation Reconstruction Strategy for Integrated Truss Structures Subjected to Thermal–Mechanical Load |
| title_fullStr | A Deformation Reconstruction Strategy for Integrated Truss Structures Subjected to Thermal–Mechanical Load |
| title_full_unstemmed | A Deformation Reconstruction Strategy for Integrated Truss Structures Subjected to Thermal–Mechanical Load |
| title_short | A Deformation Reconstruction Strategy for Integrated Truss Structures Subjected to Thermal–Mechanical Load |
| title_sort | deformation reconstruction strategy for integrated truss structures subjected to thermal mechanical load |
| topic | deformation reconstruction large space truss thermal–mechanical load Ko displacement theory structural health monitoring |
| url | https://www.mdpi.com/1424-8220/25/2/558 |
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