Non-linear bending compliance of thin ply composite beams by local compression flange buckling

F. Schadt; M. Rueppel; C. Brauner; Y. Courvoisier; K. Masania; C. Dransfeld

doi:10.1016/j.compstruct.2020.111995

Non-linear bending compliance of thin ply composite beams by local compression flange buckling

F. Schadt, M. Rueppel, C. Brauner, Y. Courvoisier, K. Masania^*, C. Dransfeld

^*Corresponding author for this work

Aerospace Manufacturing Technologies

Research output: Contribution to journal › Article › Scientific › peer-review

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Abstract

Passive spanwise bending shape-adaption has the potential to increase the efficiency and manoeuvrability of vehicles with wing-like structures. By utilisation of compression flange buckling, the in-plane stiffness can be tuned to design beams with contrasting pre-buckling and post-buckling bending stiffness. The investigated concept is experimentally validated using a thin-ply laminated composite four-point bending beam, which is designed to experience compression flange buckling in the span with constant moment. The bending stiffness was reduced by more than 41% after the onset of buckling which shows the effectiveness of compression flange buckling for non-linear bending compliance.

Original language	English
Article number	111995
Journal	Composite Structures
Volume	239
DOIs	https://doi.org/10.1016/j.compstruct.2020.111995
Publication status	Published - 1 May 2020

Keywords

Buckling
Non-linear compliance
Post-buckling
Shape-adaptation
Thin ply composites

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10.1016/j.compstruct.2020.111995

1-s2.0-S0263822319347233-mainFinal published version, 2.81 MBLicence: CC BY

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title = "Non-linear bending compliance of thin ply composite beams by local compression flange buckling",

abstract = "Passive spanwise bending shape-adaption has the potential to increase the efficiency and manoeuvrability of vehicles with wing-like structures. By utilisation of compression flange buckling, the in-plane stiffness can be tuned to design beams with contrasting pre-buckling and post-buckling bending stiffness. The investigated concept is experimentally validated using a thin-ply laminated composite four-point bending beam, which is designed to experience compression flange buckling in the span with constant moment. The bending stiffness was reduced by more than 41% after the onset of buckling which shows the effectiveness of compression flange buckling for non-linear bending compliance.",

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AU - Schadt, F.

AU - Rueppel, M.

AU - Brauner, C.

AU - Courvoisier, Y.

AU - Masania, K.

AU - Dransfeld, C.

PY - 2020/5/1

Y1 - 2020/5/1

N2 - Passive spanwise bending shape-adaption has the potential to increase the efficiency and manoeuvrability of vehicles with wing-like structures. By utilisation of compression flange buckling, the in-plane stiffness can be tuned to design beams with contrasting pre-buckling and post-buckling bending stiffness. The investigated concept is experimentally validated using a thin-ply laminated composite four-point bending beam, which is designed to experience compression flange buckling in the span with constant moment. The bending stiffness was reduced by more than 41% after the onset of buckling which shows the effectiveness of compression flange buckling for non-linear bending compliance.

AB - Passive spanwise bending shape-adaption has the potential to increase the efficiency and manoeuvrability of vehicles with wing-like structures. By utilisation of compression flange buckling, the in-plane stiffness can be tuned to design beams with contrasting pre-buckling and post-buckling bending stiffness. The investigated concept is experimentally validated using a thin-ply laminated composite four-point bending beam, which is designed to experience compression flange buckling in the span with constant moment. The bending stiffness was reduced by more than 41% after the onset of buckling which shows the effectiveness of compression flange buckling for non-linear bending compliance.

KW - Buckling

KW - Non-linear compliance

KW - Post-buckling

KW - Shape-adaptation

KW - Thin ply composites

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JO - Composite Structures

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ER -

Non-linear bending compliance of thin ply composite beams by local compression flange buckling

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Keywords

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