| 摘要 |
The rotor blade for a wind energy turbine comprising a longitudinal shell (16) defining a root (18) to be connected to a hub (12) of a rotor (10), a tip (20), a forward edge (22) and a rearward edge (24), the shell (16) having a spar (28) including two spar caps (30,32) connected via at least one shear web (34) arranged between the forward and rearward edges (22,24) of the shell (16) and extending in the longitudinal direction of the shell (16), and a structural damping system arranged within the shell (16) and having a pendulum (36) including a damped sandwich beam (40) and a mass element (42) located at one end of the beam (40). The beam (40) comprises a sandwich structure including at least three layers comprising at least one damping middle layer (44) arranged between and connected to outer layers (46) of a elastic material. The sandwich beam (40) is connected to the at least one shear web (34) in a cantilevered manner such that the mass element (42) is proximal to the tip (20) of the shell (16) and the beam (40) can be oscillated in a direction (38) towards and away from the forward and rearward edges (22,24) of the shell (16). |
