Overview of Necessary Development Steps for the Realization of Woven Cellular Structures for Adaptive Composites
Flexible adaptive structures made from fiber-reinforced plastic composites (FRP) with defined stiffness and flexibility have repeatedly aroused the interest of international research groups in the past. The motivation for the development of such structures is to increase efficiency, save weight, extend the existing limits of
structure and tool design and integrate functions. One approach to avoid the contradiction of implementing structural flexibility on the one hand and stiffness, on the other hand, are pressure-actuated cellular structures (PACS), which have so far only been investigated theoretically. Weaving technology offers outstanding approaches to the implementation of such complex 3D geometries. However, there is a lack of methods for the formation of complex 3D geometries such as PACS and for the technical implementation in weaving processes. The aim of this paper is to describe theoretical and experimental knowledge as well as necessary development steps for the realization of woven PACs. The theoretical possibilities for the technical weaving of PACS with necessary large gradients in wall
thickness are determined. A methodology for the weaving of cellular structures composed of individual sections as well as a process chain for geometry processing and pattern development for PACS is introduced. The implementation of the PACS is demonstrated by means of a woven example.