PLATE MATERIAL, PLATE MATERIAL FOR RIGID BODY ORIGAMI STRUCTURE, AND FOLDABLE STRUCTURE

摘要

To provide a plate material for use in a rigid body origami structure by being rigid and light in weight, and a foldable structure composed of the plate material.SOLUTION: A plate material is constituted of: at least two hard composite parts (R) being fiber-reinforced resin composites composed of reinforcing fibers and first matrix resins; and substantially-linear soft composite parts (S) being bendable portions composed of reinforcing fibers and second matrix resins which are arranged while contacting with both a substantially-linear edge of one hard composite part (R) and a substantially-linear edge of the other hard composite part (R). A thickness T (m) of the hard composite part (R) and rotation torque Tr (Nm/m) per unit length of the soft composite part (S) by elastic restoration which is generated when folding the two hard composite parts (R) which adjoin each other with the soft composite parts (S) sandwiched therebetween by an angle of 90° with the same as an axis satisfy a relationship of 50Tr/T50000.SELECTED DRAWING: Figure 3