| abstract |
(57) [Summary] [Structure] The cross section cut by a plane perpendicular to the plane receiving the bending load forms a closed space, and the material forming the closed space is a thermoplastic resin containing continuous fibers. When the distance between the neutral axis of the cross-sectional shape forming the open space and the surface receiving the load is E1 and the distance between the neutral axis and the surface opposite to the surface receiving the load is E2, E2 / E1 is 1.5 to A structure that is 2.4. [Effect] A structure made of a thermoplastic resin plate can be formed by low pressure, and a closed cross-sectional shape can be easily formed. In addition, since it is possible to easily obtain a shape that effectively utilizes the material properties of the fiber-reinforced thermoplastic resin, it is possible to supply a lightweight and high-strength structure. |