Non-linear bending compliance of thin ply composite beams by local compression flange buckling. (1st May 2020)

• Record Type: Journal Article
• Authors: Schadt, F.; Rueppel, M.; Brauner, C.; Courvoisier, Y.; Masania, K.; Dransfeld, C.
• Is Part Of: Composite structures. Volume 239(2020)
• Publication Date: 2020-05-01
• Subjects: Shape-adaptation -- Non-linear compliance -- Buckling -- Post-buckling -- Thin ply composites; Composite construction -- Periodicals; Composites -- Périodiques; 624.18
• DOI: 10.1016/j.compstruct.2020.111995
• Languages: English
• ISSNs: 0263-8223

Abstract

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.