| 摘要 |
The truss-like beam is formed by the regular repetition along the axis of the beam, of polyhedral elementary cells, each one having two parallel and identical end faces, shaped as regular polygons with n sides which constitute the faces shared with the adjacent cells, and 2n triangular lateral faces formed by joining each apex of an end face to the two closest apices of the opposite end face; the edges of the elementary cell are materialized by elements which are permanently subjected to a pulling force, whereas rigid bars in buckled state join each apex of the elementary cell to its center. |
