Host: The Japan Society of Mechanical Engineers
Name : [in Japanese]
Date : June 06, 2021 - June 08, 2021
We have changed the anisotropic stiffness of a shape memory polymer by adding a shape pattern to the polymer while maintaining a static fitting ability. The shape memory polymer can be fitted statically in the rubber state and retain their shape in the glass state. However, since the stiffness in the glass state is isotropic and rigid, it does not have deformability only in a certain direction. Therefore, we added a shape pattern to satisfy both static fitting and anisotropic stiffness. We adopted a wavy thread structure as the shape pattern, and we formulated to confirm that the stiffness changes by changing the dimensional parameters. We calculated the measure values by the tensile test in order to investigate the designing anisotropic stiffness. The ratio of the measure values in the width direction to the longer direction varied from 0.857 to 255, indicating that the anisotropy of the stiffness can be designed.
