| 摘要 |
A blade (18) for a wind turbine (10) generally comprises a shell body (30) defined by first and second shells (32, 34) extending between a leading edge (36) and a trailing edge (38), an inner spar (40) supporting at least a portion of the shell body (30), and a damping element (60, 100, 120) coupled to at least one of the shell body (30) or inner spar (40). The damping element (60, 100, 120) is configured to move relative to the shell body (30) to dissipate vibrations of the blade (18), and has a greater degree of freedom in a flapwise direction (48) between the first and second shells (32, 34) than in an edgewise direction (46) between the leading and trailing edges (36, 38). |
