TURBINE BLADE DAMPING DEVICE WITH CONTROLLED LOADING

摘要

A damping structure (24) for a turbomachine rotor (10). The damping structure includes an elongated snubber element (60) including a first snubber end (62) rigidly attached to a first blade (14a) and extending toward an adjacent second blade (14b), and an opposite second snubber (64) end defining a first engagement surface (72) positioned adjacent to a second engagement surface (74) associated with the second blade. The snubber element has a centerline (34) extending radially inwardly in a direction from the first blade toward the second blade along at least a portion of the snubber element between the first and second snubber ends. Rotational movement of the rotor effects relative movement between the first engagement surface and the second engagement surface to position the first engagement surface in frictional engagement with the second engagement surface with a predetermined damping force determined by a centrifugal force on the snubber element.