Schaeffner, Maximilian ; Platz, Roland (2021)
Gain-scheduled H∞ buckling control of a circular beam-column subject to time-varying axial loads.
In: Smart Materials and Structures, 2018, 27 (6)
doi: 10.26083/tuprints-00017751
Article, Secondary publication, Postprint
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Schaeffner, Platz 2018 - Gain-scheduled Η sub ∞ sub buckling control_Accepted Manuscript.pdf Copyright Information: CC BY-NC-ND 4.0 International - Creative Commons, Attribution NonCommercial, NoDerivs. Download (2MB) | Preview |
| Item Type: | Article |
|---|---|
| Type of entry: | Secondary publication |
| Title: | Gain-scheduled H∞ buckling control of a circular beam-column subject to time-varying axial loads |
| Language: | English |
| Date: | 15 April 2021 |
| Place of Publication: | Darmstadt |
| Year of primary publication: | 2018 |
| Publisher: | IOP |
| Journal or Publication Title: | Smart Materials and Structures |
| Volume of the journal: | 27 |
| Issue Number: | 6 |
| Collation: | 18 Seiten |
| DOI: | 10.26083/tuprints-00017751 |
| Corresponding Links: | |
| Abstract: | For slender beam-columns loaded by axial compressive forces, active buckling control provides a possibility to increase the maximum bearable axial load above that of a purely passive structure. In this paper, an approach for gain-scheduled H∞ buckling control of a slender beam-column with circular cross-section subject to time-varying axial loads is investigated experimentally. Piezo-elastic supports with integrated piezoelectric stack actuators at the beam-column ends allow an active stabilization in arbitrary lateral directions. The axial loads on the beam-column influence its lateral dynamic behavior and, eventually, cause the beam-column to buckle. A reduced modal model of the beam-column subject to axial loads including the dynamics of the electrical components is set up and calibrated with experimental data. Particularly, the linear parameter-varying open-loop plant is used to design a model-based gain-scheduled H∞ buckling control that is implemented in an experimental test setup. The beam-column is loaded by ramp- and step-shaped time-varying axial compressive loads that result in a lateral deformation of the beam-column due to imperfections, such as predeformation, eccentric loading or clamping moments. The lateral deformations and the maximum bearable loads of the beam-column are analyzed and compared for the beam-column with and without gain-scheduled H∞ buckling control or, respectively, active and passive configuration. With the proposed gain-scheduled H∞ buckling control it is possible to increase the maximum bearable load of the active beam-column by 19% for ramp-shaped axial loads and to significantly reduce the beam-column deformations for step-shaped axial loads compared to the passive structure. |
| Status: | Postprint |
| URN: | urn:nbn:de:tuda-tuprints-177512 |
| Additional Information: | Accepted Manuscript |
| Classification DDC: | 600 Technology, medicine, applied sciences > 600 Technology 600 Technology, medicine, applied sciences > 620 Engineering and machine engineering |
| Divisions: | 16 Department of Mechanical Engineering > Research group System Reliability, Adaptive Structures, and Machine Acoustics (SAM) |
| TU-Projects: | DFG|SFB805|C2 Mechanische, mech |
| Date Deposited: | 15 Apr 2021 09:07 |
| Last Modified: | 10 Apr 2024 10:57 |
| URI: | https://tuprints.ulb.tu-darmstadt.de/id/eprint/17751 |
| PPN: | 478533438 |
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