Adaptive winding pin and hooking capacity model for coreless filament winding

Abstract

Coreless filament winding is a manufacturing process used for fiber-reinforced composites, resulting in high-performance lightweight lattice structures. Load transmission elements, which are assembled from commercially available standardized parts, often restrict the component design. A novel adaptive winding pin was developed, which is made by additive manufacturing and can therefore be adjusted to specific load conditions resulting from its position within the component. This allows to decouple the fiber arrangement from the winding pin orientation, which allows a fully volumetric framework design of components. A predictive model for the pin capacity was derived and experimentality validated. The hooking conditions, pin capacity, and occupancy were considered in the creation of a digital design tool.

Investigation of the Fabrication Suitability, Structural Performance, and Sustainability of Natural Fibers in Coreless Filament Winding

“…Coreless filament winding (CFW) emerged in the field of construction, enabling an automated [7] and FE-supported design process [8] for large-scale [9] building components, which can be individualized. In CFW, rovings are placed individually around spatially arranged anchors [10], held in place by a winding fixture. The fibers are impregnated with a thermosetting resin before or during the winding session and the winding session includes the execution of the winding plan.…”

International planetary sunshade concept with a function-integrated and scalable support structure based on coreless filament winding

“…In CFW, a continuous fiber bundle impregnated with a synthetic resin is spanned freely between point-like anchors in a specific sequence. Those anchors [13] are usually metallic pins held in position by an mountable frame. After cross-linking the resin, the component, can be removed from this winding fixture.…”

“…However, basalt fibers have already been implemented in CFW [18], while cold-curing ceramic matrix systems are also available [19]. Other studies have already optimized the fiber arrangement on the load induction element [20] and optimized the pin geometry [13]. Bringing these innovations together effectively promises a good starting point for realizing an extraordinarily long and lightweight truss structure made fully automated, in-obit by CFW using lunatic materials in the far future.…”

Long-span fiber composite truss made by coreless filament winding for large-scale satellite structural systems demonstrated on a planetary sunshade concept

“…Fibers are usually impregnated online via a resin bath or cartridge-based system 20 . The most common anchoring approach involves a winding pin 21 , consisting of a metallic sleeve with washers at both ends bolted onto a winding frame. The fiber composite only contacts the sleeves, which typically remain within the structure after removal from the fixture.…”

“…However, also traditional filament winding machines can be used for CFW when implementing a winding fixture. Winding frames 21 offer rapid reconfiguration without requiring high surface accuracy or release agents, distinguishing them from mandrels or molds. However, due to the absence of guide surfaces, CFW lacks consolidation 23 and experiences variations in fiber tension 20 .…”