Mechanically programmed shape change in laminated elastomeric composites

摘要: Soft, anisotropic materials, such as myocardium in the heart and extracellular matrix surrounding cells, are commonly found nature. This anisotropy leads to specialized responses is imperative material functionality, yet few soft materials exhibiting similar have been developed. Our group introduced an shape memory elastomeric composite (A-SMEC) composed of non-woven, aligned polymer fibers embedded matrix. The exhibited (SM) behavior with significant room-temperature fixing. Here, we exploit this by bonding together laminates oblique that tensile deformation at room temperature – mechanical programming results coiling. response a breakthrough programming, since non-affine change achieved simply stretching layered A-SMECs temperature. We will show pitch curvature curled geometries depend on fiber orientations degree strain programmed into material. To validate experimental results, model was developed captures viscoplastic A-SMECs. Theoretical correlated well data, supporting our conclusions ensuring attainability predictable curling geometries. envision these smart, soft, changing aerospace medical applications.