The mechanics of composite corrugated structures: A review with applications in morphing aircraft

HCI meets Material Science

“…in roofs, walls and pipes), [104,240], in aerospace structures (e.g. the Junkers Ju-52 of the 1930's) [106,232,265,266] and in sandwich panels for marine and aerospace applications [48,86,117,194]. This is due to their high strength-to-weight ratio, energy absorption capabilities and anisotropic behaviour, which can be attributed to the high degree of stiffness transverse to the corrugation direction, in comparison to along the corrugation direction.…”

Corrugation Reinforced Composites: A Method for Filling Holes in Material‐Property Space

“…Utilization of the corrugated geometry has been shown to have potential to increase the necking strain of a material as a result of the unbending of the corrugation during loading. As outlined in the review paper by Dayyani et al, [10] this improved elongation in the longitudinal direction coupled with high transverse stiffness has made the corrugated geometry an excellent candidate in the construction industry, the packaging industry in the form of corrugated board, as explored in Luo et al [11] and Gilchrist et al, [12] and more recently in the aerospace industry for use in morphing wings, as studied by Ge et al, [13] Xia et al, [14] Kress and Winkler, [15] Yokozeki et al, [16] and Park et al [17] Studies of isolated corrugations or corrugated sandwich structures by Thill et al, [18] Dayyani et al, [19] Bouaziz, [20] Boke, [21] and Fraser et al [22] found that when subjected to a tensile load the stress-strain response is characterized by initially low levels of stress followed by increasing work hardening behavior that can be attributed to the unbending corrugation, followed by normal plastic behavior of the material once the corrugation is straightened. Ultimately, this leads to the material necking at a larger value of strain compared to a straight sample.…”

Morphing structures and fatigue: The case of an unmanned aerial vehicle wing leading edge

“…11,12 Mechanisms can also be used for morphing purposes: Perera et al 13,14 present a wing morphing solution based upon the use of an eccentric curved beam, which converts an actuated rotation motion into a vertical displacement along the beam. 11,12 Mechanisms can also be used for morphing purposes: Perera et al 13,14 present a wing morphing solution based upon the use of an eccentric curved beam, which converts an actuated rotation motion into a vertical displacement along the beam.…”