A variable-topology morphing composite cylindrical lattice

Morphing composite structures are of significant interest due to the fact that they exhibit superior mass-to-stiffness ratios and a large degree of tailorability in comparison to traditional materials and structures. One such morphing composite structure is the multistable composite cylindrical lattice. Current work introduces a novel variable-topology morphing mechanism to it through the use of both permanent magnets and electromagnets. By replacing a set of mechanical fasteners from the central intersection of the lattice strips with a bespoke variable-topology mechanism introduces a controllable and replicable semi-autonomous means for topology morphing. The variable-topology mechanism allows the structure to transition from being a linear deployment actuator to one that deploys along a curved path, without need for external mechanical input. The behaviour of both the variable-topology mechanism and the topology-changing cylindrical lattice are thoroughly characterised through a combination of mechanical and virtual tests.