形状記憶ポリマーを用いた扇子型展開構造物

抄録

Shape memory polymers (SMPs) are a kind of smart material which can retain a temporary shape and recover to their original shape under outside stimulus. With its attractive characteristic, SMPs can be used in various industries. Deployable structure is necessary for achieving small launching size for large space structures. Using SMP as the material for deployable space structure can have the benefit of light-weight compared to traditional materials. In this study, a self-deployable fan-shape structure is proposed. The relationship between temperature and recovery ratio of the structural member is discussed. The structural member performs the best at glassy temperature and recovery ratio decreases with temperature rising. The stiffness and natural frequency of the fan-shape structure are simulated using FEA. A functional self-deployable structure is made, and the structure can achieve complete recovery after several times of deployment.