| 摘要 |
The invention is related to a bar (1) of composite matrix material, said bar (1) having a longitudinal axis (8) perpendicular to a cross section with upper and lower surfaces (2, 3). Said composite matrix material comprises a first group of fibers which extend parallel to the longitudinal axis (8) and a second group of fibers which extend at an angle to the longitudinal axis (8). At least one torsion box (17) is provided inside the cross section along the longitudinal axis (8). Said at least one torsion box (17) comprises an upper and a lower layer (10, 21, 11, 22) respectively offset of the longitudinal axis (8) and of the upper and the lower surfaces (2, 3), said upper and lower layers (10, 21, 11, 22) being laterally joint, while the cross section between the upper and the lower layer (10, 21, 11, 22), between the upper layer (10, 21) and the upper surface (2) and between the lower layer (11, 22) and the lower surface (3) is filled with the first group of fibers extending essentially parallel to the longitudinal axis (8). |
