2012
DOI: 10.1177/1045389x12458040
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Profile beams with adaptive bending–twist coupling by adjustable shear centre location

Abstract: Semi-active structural elements based on variable stiffness represent a promising approach to the solution of the conflict of requirements between load-carrying capability and shape adaptivity in morphing lightweight structures. In the present work, a structural concept with adaptive bending–twist coupling aiming at a broad adjustment range of coupling stiffness while maintaining high flexural rigidity is investigated by analysis, simulation and experiment.

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Cited by 12 publications
(12 citation statements)
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“…No experimental results of adaptive composite beams were found in the scientific literature, and therefore the model accuracy was analysed with experimental movements of aluminium beams, as reported by Raither et al [10]. These authors present experi mental data on cantilever beams with a box section, with three walls made of aluminium and the fourth (one of the webs) of a PMMA polymer.…”
Section: Model Validationmentioning
confidence: 99%
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“…No experimental results of adaptive composite beams were found in the scientific literature, and therefore the model accuracy was analysed with experimental movements of aluminium beams, as reported by Raither et al [10]. These authors present experi mental data on cantilever beams with a box section, with three walls made of aluminium and the fourth (one of the webs) of a PMMA polymer.…”
Section: Model Validationmentioning
confidence: 99%
“…The second cross section has lower shear stiffness due to the position of the adaptive walls, and thus the influence of temperature in the shear stiffness is high. The two sections have no variable stiffness flanges, since in some applications (as in aircraft structures) the principal bending stiffnesses should be affected as little as possible [10].…”
Section: Problem Descriptionmentioning
confidence: 99%
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“…14,15 While testing of a scaled experimental airfoil structure and numerical upscaling to the conditions of a glider wing have shown the great potential of the structural concept, the applied smart material, which exploits the glass transition of integrated polymer layers, suffers from high energy demand and long activation times. These issues are addressed by the work on hand by the investigation of an adaptive-twist airfoil based on a similar structural design, but equipped with a smart material system relying on electromechanical coupling which promises advances in energy efficiency and activation speed.…”
Section: Introductionmentioning
confidence: 99%