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Active buckling control of an imperfect beam-column with circular cross-section using piezo-elastic supports and integral LQR control

Schaeffner, Maximilian ; Platz, Roland (2022):
Active buckling control of an imperfect beam-column with circular cross-section using piezo-elastic supports and integral LQR control. (Publisher's Version)
Darmstadt, IOP, 13th International Conference on Motion and Vibration Control (MOVIC 2016) and the 12th International Conference on Recent Advances in Structural Dynamics (RASD 2016), Southampton, UK, 04.-06.07.2016, DOI: 10.26083/tuprints-00020452,
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Item Type: Conference or Workshop Item
Origin: Secondary publication service
Status: Publisher's Version
Title: Active buckling control of an imperfect beam-column with circular cross-section using piezo-elastic supports and integral LQR control
Language: English
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, the potential of active buckling control of an imperfect beam-column with circular cross-section using piezo-elastic supports is investigated numerically. Imperfections are given by an initial deformation of the beam-column caused by a constant imperfection force. With the piezo-elastic supports, active bending moments in arbitrary directions orthogonal to the beam-column's longitudinal axis can be applied at both beam- column's ends. The imperfect beam-column is loaded by a gradually increasing axial compressive force resulting in a lateral deformation of the beam-column. First, a finite element model of the imperfect structure for numerical simulation of the active buckling control is presented. Second, an integral linear-quadratic regulator (LQR) that compensates the deformation via the piezo-elastic supports is derived for a reduced modal model of the ideal beam-column. With the proposed active buckling control it is possible to stabilize the imperfect beam-column in arbitrary lateral direction for axial loads above the theoretical critical buckling load and the maximum bearable load of the passive structure.

Place of Publication: Darmstadt
Publisher: IOP
Collation: 13 Seiten
Classification DDC: 600 Technik, Medizin, angewandte Wissenschaften > 600 Technik
600 Technik, Medizin, angewandte Wissenschaften > 620 Ingenieurwissenschaften
Divisions: 16 Department of Mechanical Engineering > Research group System Reliability, Adaptive Structures, and Machine Acoustics (SAM)
Event Title: 13th International Conference on Motion and Vibration Control (MOVIC 2016) and the 12th International Conference on Recent Advances in Structural Dynamics (RASD 2016)
Event Location: Southampton, UK
Event Dates: 04.-06.07.2016
Date Deposited: 10 Feb 2022 13:33
Last Modified: 24 Jun 2022 18:02
DOI: 10.26083/tuprints-00020452
URL / URN: https://doi.org/10.1088/1742-6596/744/1/012165
Corresponding Links:
URN: urn:nbn:de:tuda-tuprints-204522
Additional Information:

Erscheint auch in: Journal of Physics: Conference Series, Volume 744, ISSN: 1742-6596

URI: https://tuprints.ulb.tu-darmstadt.de/id/eprint/20452
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